09 malibu 3.6L 6 speed with 50,000 miles on it. I was reading the owners maual and from what I understand the fluid is "lifetime" unless you fall under the severe duty catagory and then you need to change it at 50,000, is this correct?

I don't think I fall into the severe duty but I think I would like to change the fluid as a preventative maintenance thing, don't think it can hurt can it?

So if I do this do I need to flush it or can I drop the pan and drain and add new fluid? Also is there a servicable filter I need to change?

Any advice with this would be much appreciated,
Thanks,
Scott

09 malibu 3.6L 6 speed with 50,000 miles on it. I was reading the owners maual and from what I understand the fluid is "lifetime" unless you fall under the severe duty catagory and then you need to change it at 50,000, is this correct?

I don't think I fall into the severe duty but I think I would like to change the fluid as a preventative maintenance thing, don't think it can hurt can it?

So if I do this do I need to flush it or can I drop the pan and drain and add new fluid? Also is there a servicable filter I need to change?

Any advice with this would be much appreciated,
Thanks,
Scott

Scott,

I don't see a problem with changing the tranny fluid - I've never bought the "lifetime" thing, and changing the fluid is a whole lot cheaper than buying a new transmission.

But: transmission fluid flushes? Uh uh. Flushes have been known to break crap loose that eventually clog a fluid filter, and fry the tranny. I've known two people that had this happen to their transmissions within a month of a transmission flush (one is still in a court battle with the shop that did the flush). I'd go instead with dropping the pan, replacing the filter, close it up & top it off with fluid.

Better yet - let Chevy do it, and maintain your 5yr/100k drivetrain warranty.

Anyone know what service procedure Chevy recommends for a fluid change?

Thanks for the advice jes2. Yes I have also read about the flush causing problems in transmissions, but mostly in high mile trannys that haven't been serviced.

I would like to just do a pan drop and fill since it should be pretty simple to do myself. I have to do that on my mom's civic, honda doesn't recomend flushing at all and figured I might as well do one on woman's car at the same time.

Was hoping someone had done this before and could share some advice on what all is involved.

Thanks,
Scott

"But: transmission fluid flushes? Uh uh. Flushes have been known to break crap loose that eventually clog a fluid filter, and fry the tranny."

I disagree with your comment. A tranny should not have any crap in it. If there is, it is already to late for the tranny. Most people follow mfg. suggested intervals for tranny maintenance which is mostly too late IMO. You need to check your oil often to see any discoloration and smell. If it si dark and smell gas, it is time to change it regardless of your mileage. I find Chevy's 50K interval too late. I believe this should be 30K.

I also have 05 Ford Escape, which is the easiest vehicle to work on it and I do my own flushes. I ve 85K on it and I've done 3 flushes so far.

"But: transmission fluid flushes? Uh uh. Flushes have been known to break crap loose that eventually clog a fluid filter, and fry the tranny."

I disagree with your comment. A tranny should not have any crap in it. If there is, it is already to late for the tranny. Most people follow mfg. suggested intervals for tranny maintenance which is mostly too late IMO. You need to check your oil often to see any discoloration and smell. If it si dark and smell gas, it is time to change it regardless of your mileage. I find Chevy's 50K interval too late. I believe this should be 30K.

I also have 05 Ford Escape, which is the easiest vehicle to work on it and I do my own flushes. I ve 85K on it and I've done 3 flushes so far.

I agree with this. Here in Indiana when I check fluid on almost every vehicle at 50K it is brown and should have been changed a while ago. 30K is a good interval for almost anywhere. It won't hurt to do it early anyways.

The 6 speed for the 6 cyl and same for the 4 cylinder does not have a trans pan to drop for changing fluid. There is a drain plug on the bottom and a fill hole on the top, in your case with a dipstick. According to GM a drain and fill will require 5 quarts of fluid to fill it up afterwords. Total fill is 9.6 quarts, so it changes a decent amount of it.

This is where a flush has it benefits. Where I work we flush 14 quarts of trans fluid after running the flush chemical through the trans. The main benefit I like of the flush is it gets to the fluid that will contaminate the new fluid in just a drain and fill. Also, it gets to the fluid in the torque converter. I have flushed trans fluid when it was very dark with no negative effects later down the road.

Most people follow mfg. suggested intervals for tranny maintenance which is mostly too late IMO. You need to check your oil often to see any discoloration and smell. If it si dark and smell gas, it is time to change it regardless of your mileage. I find Chevy's 50K interval too late. I believe this should be 30K.

From what I understand of the owners manual reading the maintenance schedual chevy only recomends a 50,000 interval if you fall under the severe duty catagory. Otherwise they don't have any recomendation of tranny service, lifetime fluid. I thought I was doing good wanting to do something at 50K.

Well I'm around 50,000 and I would like to do some kind of maintenance, either a fluid drain and fill or a flush. I will check the color of the fluid tomorrow to see how it looks.

So there is no filter that needs to be replaced? I see one listed at parts stores. Can I flush the tranny at home by unhooking a cooling line? Or is a drain and fill good enough?

Thanks for the advice guys.

From what I understand of the owners manual reading the maintenance schedual chevy only recomends a 50,000 interval if you fall under the severe duty catagory. Otherwise they don't have any recomendation of tranny service, lifetime fluid. I thought I was doing good wanting to do something at 50K.

Well I'm around 50,000 and I would like to do some kind of maintenance, either a fluid drain and fill or a flush. I will check the color of the fluid tomorrow to see how it looks.

So there is no filter that needs to be replaced? I see one listed at parts stores. Can I flush the tranny at home by unhooking a cooling line? Or is a drain and fill good enough?

Thanks for the advice guys.

There may be a filter for it, or they listed the filter for the 4 speed trans I am not sure. GM does not list anything for changing filters in the 6 speed transmissions. If there is it would not be very easy to do since the pan is on the side of the trans not on the bottom like the 4 speed trans is.

Personally I wouldn't go over 60K on a fluid change, I prefer 30K just for piece of mind. It really isn't that much to do it when compared to pulling a trans.

I would not flush a trans on your own. You will run a risk of overheating and damaging components. I would only have a flush done with a machine to keep trans fluid flowing. If you are doing it yourself just do a drain and fill, but pay close attention to fluid level afterwords so you don't have any problems.

Looks like a drain and fill it is then! I will start doing a drain and fill every 20-30K miles to keep a little fresh fluid in there.

On a side note, my mom has a honda civic with 30K and honda does not recomend a flush ever, just a drain and fill and no filter to change.

Thanks for all your help guys!

"But: transmission fluid flushes? Uh uh. Flushes have been known to break crap loose that eventually clog a fluid filter, and fry the tranny."

I disagree with your comment. A tranny should not have any crap in it. If there is, it is already to late for the tranny. Most people follow mfg. suggested intervals for tranny maintenance which is mostly too late IMO. You need to check your oil often to see any discoloration and smell. If it si dark and smell gas, it is time to change it regardless of your mileage. I find Chevy's 50K interval too late. I believe this should be 30K.

I also have 05 Ford Escape, which is the easiest vehicle to work on it and I do my own flushes. I ve 85K on it and I've done 3 flushes so far.

Well, you're certainly entitled to your opinion...

But, reality is reality. The flushes were done by shops, the trannys burned up on both cars within about 30 days, and that is that. Game over, and one person's opinion doesn't pay for another person's new transmission.

And a tranny for a RX300 is pricey, indeed. I don't think 65k was that bad (I wouldn't do it, though) for the first fluid change. That one is in court.

I agree with you on the frequency of the transmission fluid changes. I used to change out some of my F150's fluid every 25k by disconnecting the output line, and let it drain a few quarts.

I have a question for you and the rest of the group:

Exactly how do you check the trans fluid on the 'bu? Anyone notice that there is no transmission fluid level stick?

Is there a service plug or port that can be accessed underneath during my next oil change?

Well, you're certainly entitled to your opinion...

But, reality is reality. The flushes were done by shops, the trannys burned up on both cars within about 30 days, and that is that. Game over, and one person's opinion doesn't pay for another person's new transmission.

And a tranny for a RX300 is pricey, indeed. I don't think 65k was that bad (I wouldn't do it, though) for the first fluid change. That one is in court.

I agree with you on the frequency of the transmission fluid changes. I used to change out some of my F150's fluid every 25k by disconnecting the output line, and let it drain a few quarts.

I have a question for you and the rest of the group:

Exactly how do you check the trans fluid on the 'bu? Anyone notice that there is no transmission fluid level stick?

Is there a service plug or port that can be accessed underneath during my next oil change?

The 6t40 6 speed trans and 4 speed trans on the four cylinder is checked by warming the trans to operating temp and removing a plug on the trans. Then the trans is filled from the top till the fluid drips out of the hole. The 6t70 6 speed on the v6 has a dipstick and is checked at operating temp. The operating temp is between 180-200 degrees or drive the vehicle for about 15 miles to warm it up.

I do trans flushes at the dealer I work at. Everyone there uses common sense and doesn't flush a trans when the fluid is black and burnt or when there is high mileage and never done before. Brown fluid is as far as I will go with flushing because it doesn't indicate there is a problem. I know of shops that have burned up transmissions because of it being done when it shouldn't have been. No matter how it is done, albeit drain and fill or flush, it is good to just maintain the vehicle.

I just did a drain flush on my 3.6L/ 6T70 trans today. Very simple, took about 5 mins of total effort. You just need an 11mm socket to take the drain plug out. Let it drain while finding soemthing else to do for 10-15 mins. Put plug back in and add approx. 5.5qts.

I just did a drain flush on my 3.6L/ 6T70 trans today. Very simple, took about 5 mins of total effort. You just need an 11mm socket to take the drain plug out. Let it drain while finding soemthing else to do for 10-15 mins. Put plug back in and add approx. 5.5qts.

That would be a drain and fill.

I've never done a flush, never been a fan.

you are right. I was drinking Xmas Cheer when I typed that!

Is there a washer or seal on the drain plug that I need to replace when I do this? I am also going to be changing the trans fluid in mom's civic and there is a crush washer that needs to be replaced so this is why I ask.

Thanks

nope, no crush washer that leaks. And you are right. Honda uses those dam things and if you change engine oil and keep re-using the same crush washer it will leak after 3-4 times.

If anyone does a DIY filter change please post the feedback of how tough it was. For those wondering the conver that needs removed is not on bottom of trans but front side. Looks to be a pretty large job to me. For the record I have changed probablt 25 trans filters in my lifetime and never once had a noticable result from doing so. I know it is a proactive action but this looks to be way different that dropping the pan on your Turbo 350 trans in your chevy pickup folks.

It's not recommended to flush the transmission or change fluid. The filter is not a general service item and not accessible for general service.

I hate to resurrect a thread but I can not find the type of ATF these trannys take?

Thanks

I hate to resurrect a thread but I can not find the type of ATF these trannys take?

Thanks

The trans fluid is Dexron VI.

I sure wish there was a way to make the trans hold a geat a little longer and shift a bit more crispe. If anyone finds anything on that, please post here or PM me.

http://www.chevymalibuforum.com/forums/showthread.php?t=6620

LOL. Ya lets not change the fluid and just buy a new trans instead. Please stop posting here...

At any rate there is NOTHING wrong with replacing the fluid. How the heck could fresh ATF be worse then OLD fluid is beyond me.

I understand the incredulity of that statement. But I'd suggest that instead of insulting the intelligence of the person posting, and revealing just how limited your maturity is, you should ask a question.

And don't take it upon yourself to start acting like you own this site. Anyone is allowed to post here if they follow the rules. Take you for example! But you're pushing it. This is the third comment of yours I've taken exception with. You need to think before you post further!

It's not recommended to flush the transmission or change fluid. The filter is not a general service item and not accessible for general service.

I'm curious about that statement.

Why is it not recommended to change the fluid? Like another post mentions, albeit in a demeaning way, why is new fluid replacing old fluid a bad thing?

I can understand that the trans was not designed with a serviceable filter, but that, too, seems a bit kooky to many. The trans has clutches and other wear items. As they wear the filter will collect the particles resulting from that wear. Is the filter so robust that it will go half a million miles but the trans won't? Are there no little orifices in this trans, like other transmissions, that would be affected by those particles? Did an engineer slip up by not making a replaceable filter a part of the design and now we're stuck with a non-serviceable component?

Your previous comments reflected what I would consider an intimate knowledge of the transmission and therefore tended to support the screen name you've chosen. But that statement calls the whole thing into question! I'd like you to PM me with your contact info so I can determine if you actually are what you say you are. Don't take offense at that, please. I'm responsible for taking care of this site, among others, and I want the members here to know whether you are who you say you are or not. Since today is Saturday I don't expect a reply but on Monday I will. Lacking that I may begin the process of preventing further posts until such time as we can determine how to handle this.

Why is it not recommended to change the fluid? Like another post mentions, albeit in a demeaning way, why is new fluid replacing old fluid a bad thing?

Due to the sensitve nature of the oil level setting procedure. The potential for a customer to change their own oil and set the level wrong is extremely high. There is a thermo element in the front cover. Due to the thremo element and ability of the trans to naturally cool itself, setting the oil at the correct trans operating temperature is critical. Incorrect setting can cause temp or other operational issues.


I can understand that the trans was not designed with a serviceable filter, but that, too, seems a bit kooky to many. The trans has clutches and other wear items. As they wear the filter will collect the particles resulting from that wear. Is the filter so robust that it will go half a million miles but the trans won't? Are there no little orifices in this trans, like other transmissions, that would be affected by those particles? Did an engineer slip up by not making a replaceable filter a part of the design and now we're stuck with a non-serviceable component?

The trans must be removed from the vehicle and taken apart to access the filter.


Your previous comments reflected what I would consider an intimate knowledge of the transmission and therefore tended to support the screen name you've chosen. But that statement calls the whole thing into question! I'd like you to PM me with your contact info so I can determine if you actually are what you say you are. Don't take offense at that, please. I'm responsible for taking care of this site, among others, and I want the members here to know whether you are who you say you are or not. Since today is Saturday I don't expect a reply but on Monday I will. Lacking that I may begin the process of preventing further posts until such time as we can determine how to handle this.

As an admin, you should have access to my email address that was used to register and receive replies. Send me an email. On the other side of things, do you require every person to verify who they say they are?

Again your comments are very thorough and respectful. Thank you! It reflects a high degree of professionalism, which I'm sure every member here, including myself, appreciates.

Might I press you for a little more info, then, please? I truly enjoy my driving experiences and routinely use the manual shift button, both to upshift and to downshift. I try not to show brake lights unless I'm actually decelerating more quickly than engine braking will allow. On older models with EFI I learned while the engine is being overdriven through downshifting that the injectors actually shut off the fuel supply so it's not using any fuel like a carburetted engine would. Aside from the obvious increased wear on the clutches what effect does this have on the transmission and/or its individual components? Can you comment on whether or not the injectors are told to shut off the fuel supply in the Gen7 Malibu during engine braking?

As far as requiring every person to verify who they say they are, it's not asked. But it isn't most members who have a screen name such as yours. I am more confident than ever that you're the Real McCoy. But, as President Reagan once said, "Trust, but verify." For the sake of having absolute proof as an Admin for any questions members may have I'll go ahead and send you an email. And I thank you for suggesting it and allowing me to do so.

So GM_6T40 Trans_Engineer is flat out wrong and simply giving out some seriously bad advice IMO.

Yes you should drain and replace the ATF. Its not that complicated people. Drain the ATF and measure how much came out. Pour the same amount of fresh ATF back in. Drive the car around for a few days, and repeat at least once to get as much of the old ATF out. This is how its been done for decades.

Change the ATF or change the trans in the future, its your choice...

Dude, did you even read his post? To change the fluid you need to R&R the trans! And as for your advice about "how it's been done for decades", does nothing ever change or improve in your world?

I'm sure others who read this thread will recognize sound input when they see it, and then dismiss yours as bunk.

************************************************** *******

So let me be perfectly clear on this, ok?

Your first post was like you had your hand out, asking for a freebie. You've been running around this site posting opinions without any factual basis, and you're unwilling to share any so-called source. Now you're calling others immature or refuting what is obviously sound advice.

For those reasons here is your warning: Be very careful about what you post in the future. This is a great site and I'm here to help keep it that way. Your opinions are allowed, but calling names or making false claims will not be allowed any further!

So GM_6T40 Trans_Engineer is flat out wrong and simply giving out some seriously bad advice IMO.

Yes you should drain and replace the ATF. Its not that complicated people. Drain the ATF and measure how much came out. Pour the same amount of fresh ATF back in. Drive the car around for a few days, and repeat at least once to get as much of the old ATF out. This is how its been done for decades.

Change the ATF or change the trans in the future, its your choice...

A real mechanic that ACTUALLY works on transmission repair will laugh in your face if you tell him a trans does not need an ATF change for 200k. Again horrible advice by GM_6T40 Trans_Engineer. I personally have seen trans go bad just after 100k due to burnt ATF. It seems GM_6T40 Trans_Engineer is simply spitting out statistics under controlled unrealistic environments or so if whatever he is stating is even published anywhere.

LOL. Ya lets not change the fluid and just buy a new trans instead. Please stop posting here...

Take a look at your comments that I have bolded.

If that ain't calling names then maybe more precisely it's making inflammatory comments about someone without having complete knowledge. Or in your case without having a thread of consideration for another individual.

You also tried to refute those comments with a let's-jump-on-the-bandwagon approach instead of citing any real research. Put up your proof or shut up.

You're too busy trying to put forward your own opinion, and when we don't buy it, you begin with the put-downs in a lame effort to make yourself look bigger than the other guy. That doesn't work with me! And it doesn't set well with others on this site.

Calm down with the rhetoric and put-downs. If you have something to say we'll listen. If you object, do it respectfully. If you believe you have evidence to refute another person's post, provide it. If not, don't post your opinion as fact. I know only one person who can do that, and you're not God!

I personally have seen trans go bad just after 100k due to burnt ATF.

FYI, Burnt clutches cause "burnt" oil, not the inverse.

My parents have a 1990 suburban that's got 230K on it. The trans has never been flushed or fluid changed. The trans oil is still red. Similiar results with a K5 blazer with 200K and a S-10 Blazer with 180K we owned. Luck? Oh, I forgot the 93 lincoln (210K), 1997 lincoln (180K), 1997 Lumina (160K), and a 2004 Tahoe (100K) that have followed a similiar life with no flushes or oil changes.


It seems GM_6T40 Trans_Engineer is simply spitting out statistics under controlled unrealistic environments or so if whatever he is stating is even published anywhere.

Please post the documentation stating that this transmission requires regular trans flushes or oil changes.

Because the mechanic knows more about it than the people who designed it??

My parents have a 1990 suburban that's got 230K on it. The trans has never been flushed or fluid changed. The trans oil is still red. Similiar results with a K5 blazer with 200K and a S-10 Blazer with 180K we owned. Luck? Oh, I forgot the 93 lincoln (210K), 1997 lincoln (180K), 1997 Lumina (160K), and a 2004 Tahoe (100K) that have followed a similiar life with no flushes or oil changes.


Please post the documentation stating that this transmission requires trans flushes or oil changes.

My transmission was leaking trans fluid at 38,000 miles, I really wish it was designed better. My mechanic had to fix an issue that was designed by the designers. I am not the only one who has had a leaking transmission on a 7th Generation Malibu.

That is very nice that your parents had vehicles that didn't have the trans fluid flushed or fluid changed. And yes, THEY are lucky that nothing happened to the transmissions. The link below goes to a thread where a member had changed his trans fluid, and it definitely wasn't red at 60,000 miles. I would not be comfortable driving a car past 100,000 miles and knowing that the trans fluid has not been changed yet, whether it being severe service driving, or casual. I am going to have to agree with 5thElement that fresh fluid is better than continuously driving on old fluid.

http://www.chevymalibuforum.com/forums/showthread.php?t=6391

And since you asked for the documentation stating when the transmission requires a fluid change... here you go. This comes straight out of my 2008 Chevy Malibu's Owners Manual. Should be done at 50,000, 100,000 and 150,000. And don't give us the BS that oh, we're probably not driving it under "severe conditions." I am finding it disrespectful that you are telling the CMF members here that they don't need to change the trans fluid.

http://img854.imageshack.us/img854/1953/img0460l.jpg

http://img716.imageshack.us/img716/1514/img0461cl.jpg

Wow this thread sure went to crap since I posted it!

I did a lot of research when I was looking into this, I am not an engineer or a mechanic but do have experience with auto maintenance.

I do not believe in "lifetime fluid". Yes it can be lifetime fluid when eventually the tranny fails the fluid is also done. I don't care what any engineer or mechanic says, no fluid is lifetime. I can run the same engine oil and my engine will probably go for 100,000 miles without problems but then the engine will die eventually. Would that be called "lifetime" engine oil? Because the oil lasted the whole "life" of the engine. Chevy calls for fluid changes for severe duty, so there is absolutely NO reason why the fluid can't be changed at regular intervals, NONE. If you want to believe in "lifetime" fluid than that is your choice, of coarse the fluid is going to last the lifetime of the tranny, but now you have to wonder what defines the lifetime of the tranny, and if changing the fluid would have extended the life of the tranny.

My 6T70 has a dipstick and a drain plug. It got a fluid change. It will continue to get fluid changes. And I will guarantee that by changing the fluid it will get the most life out of the tranny possible. Changing the fluid isn't going to hurt the transmission, why would chevy put a dipstick on it if the fluid level was so complicated? They wouldn't. Now as far as the engineers that decided they would make the choice for me that I don't need to change the filter, well in my opinion they are very wrong and should be paying for new transmissions when they fail. I could never change my oil filter when I change the oil but eventually it will clog, just like the transmission filter will eventually which will lead to transmission failure. If a filter is needed it should be replacable, period. No engineer should be able to decide that my filter never needs to be changed, why even have a filter then? Basically the engineers are putting a limit to the life of the tranny. If I chose not to do maintenance on my car that is my choice but when an engineer decides for me that a filter that should be changed is not changable that is wrong.

Trannies are the weak links in most vehicles, they need to be serviced to get the most out of them.

In the end we are all responsible for our own vehicles and can decide what we do to them as far as upkeep, unless engineers decide for us. But there is no such thing as lifetime filters and fluid.

If I can add my two cents in to BlinkQS's posting - I live in Louisiana, drive through East Texas a lot.

About 100 days a year the temps exceed 90F.

So by the definitions posted IN THE OWNER'S MANUAL, even Aunt Gertie (who only drives to/from church on Sunday morning, Sunday night, Wednesday night, to the doctor once every six months, and to the Save-A-Lot every Thursday) is ... under extreme driving conditions for over 1/4 the year!

Let me just add that any designer - ANY designer - of automatic transmissions that does NOT include an easy way to check and top off fluid SHOULD be the one that pays for when a transmission seal starts leaking and the thing runs low.

Currently, since I DON'T have level ground to check it on, I can only wait until it neutralizes on a hard left when cold and add 1/2 quart until I can afford to get the leaking seal (passenger transaxle) replaced.

Must be nice to be able to design vehicles that do not consider the real world. Also must be nice to be able to claim that anyone who DOES drive in the real world is wrong and doesn't know what they're talking about.

RwP

Thank you BlinkQS for demolishing GM_6T40 Trans_Engineers credibility with the pics you posted. People like him are a big problem in online forums today and very dangerous to be left unchecked.

Demolish? Really? I invite you to reread the manual.

Thanks to BlinkQS for posting the pictures. It verifies what was mentioned prior to me posting, and validates what I've said since joining. The recommendation to change fluid every 50K is for severe service only (page 6-6). And page 6-7 gives the definition of severe service.


I personally dont believe at all that he is even a GM employee or engineer of any kind.

Driven daily can verify.


Forums can be dangerous when there is misinformation spewed like this and with your post we have the undeniable proof to make this forum a better and safer place.

You are sharing the misinformation, not me.

trans engineer-explain something to me please.

Why would chevy say that the fluid needs to be changed for severe duty but then you say that changing the fluid is a bad thing? How can preventative maintenance be a bad thing, no matter if you car is severe duty or not? If it's required for severe duty driving then it won't hurt anything to change the fluid in normal driving. It's a sad day when a car company decides to chose for me that I can't change fluids and filters that need to be changed. You don't have to be an engineer in order to realize that if a filter is needed that it will eventually clog and need to be changed, or it will lead to trans failure-but the filter lasted the life of the trans. You also don't have to be an engineer to realize that no transmission fluid is lifetime, they break down and lose the properties that make them work, which will lead to trans failure-but the fluid lasted the life of the trans. Chevy decided for us that we shouldn't change the fluid or filter and it will last the lifetime of the transmission. Of coarse it will last because once it fails the trans will also so yes, the fluid lasted the life of the trans.:rolleyes::rolleyes::rolleyes:

You can say the same thing as far as engine oil goes. I can never change my oil and filter, and I will personally guarantee it will last as long as the engine does. Althought the engine will not last as long as if you were to change the oil and filter.

I too am wondering how never changing the trans fluid is truly the right thing to do. My understanding is you never want it to get dark or burned. So in order to avoid this you must change it.

...

Thanks to BlinkQS for posting the pictures. It verifies what was mentioned prior to me posting, and validates what I've said since joining. The recommendation to change fluid every 50K is for severe service only (page 6-6). And page 6-7 gives the definition of severe service.

...

Driven daily can verify.

...
trans engineer-explain something to me please.

Why would chevy say that the fluid needs to be changed for severe duty but then you say that changing the fluid is a bad thing? How can preventative maintenance be a bad thing, no matter if you car is severe duty or not? If it's required for severe duty driving then it won't hurt anything to change the fluid in normal driving. It's a sad day when a car company decides to chose for me that I can't change fluids and filters that need to be changed. You don't have to be an engineer in order to realize that if a filter is needed that it will eventually clog and need to be changed, or it will lead to trans failure-but the filter lasted the life of the trans. You also don't have to be an engineer to realize that no transmission fluid is lifetime, they break down and lose the properties that make them work, which will lead to trans failure-but the fluid lasted the life of the trans. Chevy decided for us that we shouldn't change the fluid or filter and it will last the lifetime of the transmission. Of coarse it will last because once it fails the trans will also so yes, the fluid lasted the life of the trans.:rolleyes::rolleyes::rolleyes:

You can say the same thing as far as engine oil goes. I can never change my oil and filter, and I will personally guarantee it will last as long as the engine does. Althought the engine will not last as long as if you were to change the oil and filter.

I too am wondering how never changing the trans fluid is truly the right thing to do. My understanding is you never want it to get dark or burned. So in order to avoid this you must change it.

Engineer's item 1. Severe service causes the trans to need serviced at 50,000 miles. Since the trans has been designed in such a way that service by the owner can cause near-certain failure, GM should make that a covered service throughout the transmission's warranty period.
Engineer's item 2. I can verify that he works at GM. I trust that he's an engineer, but if he's not we'll let GM catch up to him. Until/if that happens then I'm happy to accept his word that he's an engineer who works on/with the team that is charged with the design of the transmissions in the Malibu and others.

Scott's item 1. Indeed, how can it be bad to prevent instead of fix?
Scott's item 2. All filters clog. If they don't then they're not filtering, or they just aren't needed! Maybe this one cleans itself?
Scott's item 3. All tranny fluid eventually needs changed. Why was something so critical as the thermo element (in the front of the trans case) made a part of the trans without some way to make it less sensitive to filling?

Lgndryhr's item. When a transmission works the clutches shed particles. Those particles are what need to be filtered to prevent accelerated wear, and the process of burning a clutch now and then will cause the fluid to appear burnt as well. The fluid needs regular service changes just like the engine oil does!

Lgndryhr's item. When a transmission works the clutches shed particles. Those particles are what need to be filtered to prevent accelerated wear, and the process of burning a clutch now and then will cause the fluid to appear burnt as well. The fluid needs regular service changes just like the engine oil does!

I knew about the shed particles part. I just didn't know what happened otherwise, haha. Thanks DrivenDaily! So basically its needs changing too just not as often as oil does.

So, basically what I gather from all of this is that the damage is most likely to be incurred from a, very possible, transmission fluid over or under fill. Also, the possibility of pouring in the wrong fluid and causing damage. My trans fluid at 60K, when I changed it, was not burnt in any way just dirty from the friction material on the clutches. I do believe though that due to the mileage on the car and the climate that the car was in it fell under severe service and was due to be changed.

Checking fluid level on these transmissions varies between the 4 cylinder and 6 cylinder models. The 6 cylinder trans has a dipstick which allows for the fluid level to be checked, but to find the proper level for the vehicle depends on the temperature the trans is at. Same goes for the 4 cylinder version regarding temperature, but there is not a dipstick to check the fluid level. These are checked at a certain temperature and by removing a plug on the trans.

Both of these fluid level checks require knowing the trans temperature to verify it is at the correct level. If it is not at the correct level is when damage can occur. I am not sure if all I am thinking here is correct, but it is how I gather it to be from what I have read through all of this.

So, basically what I gather from all of this is that the damage is most likely to be incurred from a, very possible, transmission fluid over or under fill. Also, the possibility of pouring in the wrong fluid and causing damage. My trans fluid at 60K, when I changed it, was not burnt in any way just dirty from the friction material on the clutches. I do believe though that due to the mileage on the car and the climate that the car was in it fell under severe service and was due to be changed.

Checking fluid level on these transmissions varies between the 4 cylinder and 6 cylinder models. The 6 cylinder trans has a dipstick which allows for the fluid level to be checked, but to find the proper level for the vehicle depends on the temperature the trans is at. Same goes for the 4 cylinder version regarding temperature, but there is not a dipstick to check the fluid level. These are checked at a certain temperature and by removing a plug on the trans.

Both of these fluid level checks require knowing the trans temperature to verify it is at the correct level. If it is not at the correct level is when damage can occur. I am not sure if all I am thinking here is correct, but it is how I gather it to be from what I have read through all of this.

That brings up a very good point in my mind.

If the temperature of the transmission, not necessarily the engine, is critical to proper filling, where's the transmission temperature display so I know when to check the level and adjust it as necessary? Why is the car now the expert and not the owner? I asked the car but it didn't answer.

That brings up a very good point in my mind.

If the temperature of the transmission, not necessarily the engine, is critical to proper filling, where's the transmission temperature display so I know when to check the level and adjust it as necessary? Why is the car now the expert and not the owner? I asked the car but it didn't answer.

I wish it were as simple as asking the car what's wrong or how are you feeling today:D. It would save a world of trouble and make my job easier.

The only thing I have seen the trans temperature reading on is the trucks. The cars' trans temp reading is pulled up with the tech II.

I am going to add how to check fluid condition and hope this doesn't cause problems.
-The fluid should be red in color. When it is brown it doesn't mean there is an issue, it is just the material from the clutches, and happens under normal use as stated before.

-If the fluid is black or has a burnt odor then it should be checked for excessive material or metal, and driven and checked over for any issues. If there are no other issues the fluid is safe to change.

-If the fluid is milky in color it may indicate a contamination issue of water or coolant. This is just bad no matter what.

That brings up a very good point in my mind.

If the temperature of the transmission, not necessarily the engine, is critical to proper filling, where's the transmission temperature display so I know when to check the level and adjust it as necessary? Why is the car now the expert and not the owner? I asked the car but it didn't answer.

In my opinion GM made the decision for us that we don't need to do anything to the transmission, just run them till they fail. Which is very wrong to me. They don't give you a way to check the fluid properly due to not being able to tell the temp. They tell you not to change the fluid. They don't give you a servicable filter to change. They don't make filling them easy in any way. They took out anything good for the transmission. It's like having a kid and never taking them to the doctor for checkups until they die. But claiming their "fluids" lasted the life of the body. Just drive it till it dies, cars have become disposable items. If they last five years with no maintenance then the manufacturers are happy, everything after that is all proffit for them.

Why make fluid changes easy? That would stretch out the life of the trans. Which means they don't make thousands of dollars on you for a trans replacement.

The whole thinking of lifetime fluid and filters is very wrong. And I understand that GM doesn't want some people messing with the fluid because if they mess up it will lead to failure, but for them to take that away from me and shorten the life of my tranny isn't a choice they should be allowed to make. And then make false claims of lifetime fluid and lifetime filters.:eek::eek::eek:

Its not very difficult to change ATF people. No you dont have to worry about all the fluid temperature nonsense. Thats ONLY if you have have no idea how much fluid to fill. Its simple, drain the fluid and collect it all. Measure how much was drained, pour same amount back in. No need to bother with measuring temperature while filling the fluid.

Checking the fluid level is important to keep the trans in good shape though. Doing it properly is what is going to keep it that way. The fluid temperature needs to be in a certain range to properly indicate the level, so yes the fluid temperature is important. What's to say the fluid level was correct before draining it? For how expensive a trans is to overhaul it is better to air on the side of safety. What I there was a leak that the owner didn't see? There are to many risks to do it as simple as drain and fill unless you know for sure it was fine before.

Starting to sound like the design feature of having to have the oil at the Goldilocks temp to check it or fill it was put there by some young person with intellect but no real street smarts.

In my job working with spreadsheets and databases, design is a large part of the beginning of any task, but testing and applying real-world usage is what gives it the acceptance at the user's level. Then I can finish it and put the product out for consumption.

Sames goes for any other design, tranny or otherwise. If it's a good design on paper, then build it and test it 'til it breaks. Then fix it and find out how to break it again. Repeat. Not saying this wasn't done, but the real-world application has seemingly been forgotten. WE'RE the users! WE should be considered in the design process as well! WE have to fix 'em once we've bought 'em and the warranty is up!

I want to add a trans cooler. I'll bet the engineers didn't plan on that, or if they did, they're gonna poo-poo it and say the stock stuff is just fine. That's a load of you-know-what if that even tries to roll off their lips. It has always been the case that the cooler the transmission oil is, the longer all the parts will last. Friction creates heat; coolers reduce it; more coolers reduce it faster and further. I never got around to putting a cooler on the '09 I had, but now that I've been reading this stuff I'm scared to even crack a line in fear of being accused of killing the tranny.

Checking the fluid level is important to keep the trans in good shape though. Doing it properly is what is going to keep it that way. The fluid temperature needs to be in a certain range to properly indicate the level, so yes the fluid temperature is important. What's to say the fluid level was correct before draining it? For how expensive a trans is to overhaul it is better to air on the side of safety. What I there was a leak that the owner didn't see? There are to many risks to do it as simple as drain and fill unless you know for sure it was fine before.

I agree with what you are saying. The problem is GM doesn't agree with you. That is why they make it so hard to check the fluid. Also they state in the owners manual that we don't have to check the fluid. They say we don't need to change it or the filter. Don't need to worry about it at all, just run it till the tranny pukes. This is a huge design flaw by GM.

You bring up some good points about drain and fills, the fact that if you measure what you take out it still might not be right, due to leaks and what not. But you also have to consider GM says not to worry about the fluid until there is a problem. So if there is a leak it will drain all the fluid unless you realize it and then kill the tranny. So in reality it doesn't matter if it was leaking or not, because GM tells us not to worry about it, and doesn't give us an easy way to check the level to see if it's leaking. Sometimes you won't notice a small leak untill it's to late. To the average person this sounds great, never have to change fluid, never worry about fluid level, etc. But to anyone that has any mechanical knowledge this is a joke.

You say there are to many risks to doing a drain/fill and using the fluid that comes out to measure how much to put back in. You are correct that it's not the right way to do it but it's still better than just leaving the old fluid in and never changing it. If there is a leak it doesn't matter if you change the fluid or not, either way you still are going to be short. And GM has decided not to give us an easy way to check the fluid level and they specifically state in the manual not to worry about the fluid unless there is a problem. Which a lot of the time if there is a small leak you will not notice it till it's to late.

Thanks GM, for a crappy design.


You sound like you work at a dealership or are a mechanic? If so is there a way for the average person to check the level? Mine has a dipstick, but as you stated you have to check it at a certain temp. So is there a way to tell the temp to check the fluid? I know honda says to run the vehicle for 20 minutes and then check fluid to get the right level. Is there a time to run the car to get temp to right level? Or some other way to tell the temp to check the fluid? Thanks

I agree with what you are saying. The problem is GM doesn't agree with you. That is why they make it so hard to check the fluid. Also they state in the owners manual that we don't have to check the fluid. They say we don't need to change it or the filter. Don't need to worry about it at all, just run it till the tranny pukes. This is a huge design flaw by GM.

You bring up some good points about drain and fills, the fact that if you measure what you take out it still might not be right, due to leaks and what not. But you also have to consider GM says not to worry about the fluid until there is a problem. So if there is a leak it will drain all the fluid unless you realize it and then kill the tranny. So in reality it doesn't matter if it was leaking or not, because GM tells us not to worry about it, and doesn't give us an easy way to check the level to see if it's leaking. Sometimes you won't notice a small leak untill it's to late. To the average person this sounds great, never have to change fluid, never worry about fluid level, etc. But to anyone that has any mechanical knowledge this is a joke.

You say there are to many risks to doing a drain/fill and using the fluid that comes out to measure how much to put back in. You are correct that it's not the right way to do it but it's still better than just leaving the old fluid in and never changing it. If there is a leak it doesn't matter if you change the fluid or not, either way you still are going to be short. And GM has decided not to give us an easy way to check the fluid level and they specifically state in the manual not to worry about the fluid unless there is a problem. Which a lot of the time if there is a small leak you will not notice it till it's to late.

Thanks GM, for a crappy design.


You sound like you work at a dealership or are a mechanic? If so is there a way for the average person to check the level? Mine has a dipstick, but as you stated you have to check it at a certain temp. So is there a way to tell the temp to check the fluid? I know honda says to run the vehicle for 20 minutes and then check fluid to get the right level. Is there a time to run the car to get temp to right level? Or some other way to tell the temp to check the fluid? Thanks

I don't agree with GM saying the fluid never needs to be changed, but there isn't anything that says in the manual stating the fluid should never be changed. I have changed my fluid out at 60K and did not like how the fluid looked, it wasn't burnt but dirty from friction material. I have not had a single issue since, in fact it seemed to shift smoother than before. I am saying it is important to be sure the fluid level is correct because that is what will cause it to fail. I t is better to be safe than sorry. Yes, I do work for a dealer, but that doesn't mean I agree with everything I read. For the 4 cylinder owners it is very much a pain to check fluid level, and I hate it. For the 6 cylinder owners it is much easier since you have a dipstick.

The fluid range on the dipstick is also the operating temperature of the trans lowest being a certain temp and the highest mark a certain temp. Best way I can say to check the fluid level is drive it for 10-15 miles to be sure it is up to operating temp then check it on level ground. I don't agree with how things are done anymore, but there isn't anything I can do about it. I think it is more a design to keep the average owner who has no idea what they are doing from messing with their car, but the issue that causes is they follow what the manufacturer says to do.

I still stand by the older standards and don't follow the oil life monitor and change my fluids as I see fit. I have payed for the car and it is my responsibility to pay for repairs when it goes out of warranty, so I am going to take care of it in my way. The other thing is most cars end up falling under severe service in a lot of the climate regions, which is the other reason I find it necessary to change the fluid. All I was trying to saying in my previous posts that it is important to be sure the fluid level is correct to save from the issue of a bad trans later.

I don't agree with GM saying the fluid never needs to be changed, but there isn't anything that says in the manual stating the fluid should never be changed. I have changed my fluid out at 60K and did not like how the fluid looked, it wasn't burnt but dirty from friction material. I have not had a single issue since, in fact it seemed to shift smoother than before. I am saying it is important to be sure the fluid level is correct because that is what will cause it to fail. I t is better to be safe than sorry. Yes, I do work for a dealer, but that doesn't mean I agree with everything I read. For the 4 cylinder owners it is very much a pain to check fluid level, and I hate it. For the 6 cylinder owners it is much easier since you have a dipstick.

The fluid range on the dipstick is also the operating temperature of the trans lowest being a certain temp and the highest mark a certain temp. Best way I can say to check the fluid level is drive it for 10-15 miles to be sure it is up to operating temp then check it on level ground. I don't agree with how things are done anymore, but there isn't anything I can do about it. I think it is more a design to keep the average owner who has no idea what they are doing from messing with their car, but the issue that causes is they follow what the manufacturer says to do.

I still stand by the older standards and don't follow the oil life monitor and change my fluids as I see fit. I have payed for the car and it is my responsibility to pay for repairs when it goes out of warranty, so I am going to take care of it in my way. The other thing is most cars end up falling under severe service in a lot of the climate regions, which is the other reason I find it necessary to change the fluid. All I was trying to saying in my previous posts that it is important to be sure the fluid level is correct to save from the issue of a bad trans later.

Thanks for your advice.

Hey chevyguy8893
I am used to checking tranny fluid level in cars that required the tranny warmed up, run the shifter thru all the gears, put it in park. Leave the engine idling. Then pull the dip stick.
On a 2010 V6 Malibu, do you check it with the engine off, or leave idling? From what I have read here it sounds like with the engine off. I dont know for sure

It is still checked with it running and in park. The only difference with these dipsticks, if I remember correctly, is they don't have a cold range for checking fluid level.

What a read, , here is your main take-away , don't do things unless you need them. I sure XX, where X is any number 0-9, years from now the car will tell you when to do things, I always believe things are held back from consumers, unless it will be made profitable. Of course you can argue it can already be so if everything is done at the dealer, You have seen their rates I am sure. But half the fun is doing it yourself, one thing I liked about my 03 Neon is I could do anything to it and fix almost anything, as you know now its more difficult.
But I agree with others, I would like the car last and do what I can to prevent damages, I mean you know people drive hard, I do bc I am always in a hurry.

I dont even see the point in arguing this anymore. The service manual clearly states to change the ATF every 50k miles. How anyone can argue against this is beyond me...

Then why do you keep posting comments?

The whole point to our side of the argument is GM has removed from us the ability to properly care for our transmission. Instead they want us to believe that their testing proves beyond the shadow of a doubt that the tranny needs nothing until 200K miles when over 90% of the test mules survived before failing. Then you probably don't own the car anymore, so the tranny giving up the ghost will not be an issue because you're ready to move to a new car anyhow.

You see, they seem to have the same attitude as you: What they say is Gospel.

I completely disagree with their position, and so does just about everyone else, including you.

That seems to be the common problem, arguing b/w what is better, technology or preventative issues. I mean it may not be realistic to want to keep my car for 20 years, I mean i will use it and not store it away, so then the thinking makes sense to design it like that, to just toss it, but I think its natural to want to care for something and make it last.
And I agree that it seems we are "forced" to consume in that method, we just haven't seen the results yet. But I think just following common sense and checking things yourself , when reasonable is the only way to go and that to follow the scheduled maintenance otherwise, I mean somebody had to set those numbers for a reason.

I just read this whole thread. All I can say is WOW! I changed my tranny fluid 2 weeks ago at around 44K miles. Took all of 20 minutes. I seem to recall it was just about 5.5 quarts. Refilled it with Mobil1 ATF. My car is still under the 5/100 warranty, so never tell your dealer you did it yourself or they may have a hissy fit about your warranty. No problems. Bottom line is if you can change your oil you will be able to change the tranny fluid.

Do you have a 3.6 or 2.4 engine?

This thread remind me of CVT transmission on my Ford freestyle which has lifetime fluid. I change the fluid in my Freestyle without any problems. Dealer told me you need speical tools to take tranny temperture reading. I'm wondering if the Malibu has an engineering mode built into the cluster like Ford cars built after 2002. Engineering modes tell you tranny temperture. Most Ford dealer techs don't know this even exsit in the cars.

BTW here is video of a Ford cluster going into engineering test mode.

http://www.youtube.com/watch?v=PdaIE0efyGU

That seems to be the common problem, arguing b/w what is better, technology or preventative issues. I mean it may not be realistic to want to keep my car for 20 years, I mean i will use it and not store it away, so then the thinking makes sense to design it like that, to just toss it, but I think its natural to want to care for something and make it last.
And I agree that it seems we are "forced" to consume in that method, we just haven't seen the results yet. But I think just following common sense and checking things yourself , when reasonable is the only way to go and that to follow the scheduled maintenance otherwise, I mean somebody had to set those numbers for a reason.

well that's what I plan to do, Murphy's law, karma, and god willing.

I could have swear, my dealer serviced my tranny at 30k. I'll check my receipts this weekend and find out for sure. I let the dealer service everything not because I can't do it myself or I'm lazy (well maybe a little lazy in the winter) but because I rather be mad at someone else for screwing up than myself. And I love the 300$ detail job they've been doing so far the last two years for there one QC oversight I cought.

There pretty good at dotting there I's and T crossing when it comes to my car.

Do you have a 3.6 or 2.4 engine?

3.6. Sorry, forgot to say that.

Yes the malibu does display transmission fluid temps and you dont need any special tools. You can observe the transmission fluid temperature (TFT) using the Driver Information Center. The problem is only the 3.6l malibus have the 6T70 trans which has a dipstick. All 2.4l malibus use the 6T40/4T45 which does not have one. Taking temp reading from the car is useless if you dont have a dipstick. The best way to change the fluid is to collect and accurately measure what comes out to what goes in. If one is anal about temps simply keep both old and new fluid in the same room to reach same temps. Then measure and replace. So simple.

Please tell us how to read tranny temp on the DIC.
Thanks

And stop already with the useless editorial comments such as "useless...", "anal...", and "the best way...". This has already been discussed and you've dissed the engineer and GM too many times to begin counting.

If you have a comment that's worth sharing, share it. If not, have you considered keeping it to yourself? Your Debbie Downer attitude is ruining this site.

Hey 5thelement how do you observe the transmission fluid temperature (TFT) using the Driver Information Center?????
I don't think it is possible.

I too would like to know how to view this information from the DIC.

well that's what I plan to do, Murphy's law, karma, and god willing.

I could have swear, my dealer serviced my tranny at 30k. I'll check my receipts this weekend and find out for sure. I let the dealer service everything not because I can't do it myself or I'm lazy (well maybe a little lazy in the winter) but because I rather be mad at someone else for screwing up than myself. And I love the 300$ detail job they've been doing so far the last two years for there one QC oversight I cought.

There pretty good at dotting there I's and T crossing when it comes to my car.

My dealer did perform a tranny flush/service @ 39k, I know how much everyone likes proof, I have the paperwork. What I don't have is a way to blank out my personal info that y'all don't really need to see. Once I get that done I'll post it.

And I think it was only 77$,(upon further review I noticed the 112$ labor they charged so....) I don't think that's too bad. But that's purely opinion aint it.

Alright, here is the paper work:

http://i1094.photobucket.com/albums/i449/screechymon/ScreechymonserviceorderEdited.jpg

Please take note of the date of the invoice, as the service was done before this thread was posted... I didn't ask for it to be done, my dealer did it under your standard service, maybe Chevy customer service ( ie. Michelle may shine some light) and tell us if there are different service plans in different parts of the US? I don't know. All I'm saying is they suggested to me that I have it serviced....

@ Lgndryhr and Typhoon,

That may have been another "joke" in regards to your DIC questions. To 5th.

@ GM_6T40 Trans_Engineer,

Regarding page 4 post# 34, I think you may have mis spoke while annoyed.?
Would it not be the service writer that dictates to the mechanic what service to preform? As far as design goes and knowing better, you would know how the tranny is designed and the mechanic would know how to work on it.

What I mean is, I could design the HVAC, and radiant floor heating for your house, or to a manufacturing plant. However don't ask me to install it, thats why I hire contractors. They might be the mechanics/service writers in this situation.

@ scott37300

Did you have to post this thread, and ask this question? You go sit in the corner and you think about all of what you stirred up....

I'm joking scott, don't take the last part too personal, its a good read. Containing good information, points of view, and some posts just humorous.

What a read. Does anyone know the correct procedure for checking the fluid level on an auto with the 2.4 engine which does not have a dipstick? I would find this helpful for those of us who perform our own vehicle service. Thanks Tony

Ditto on what Tony said. Even better if someone would post a youtube video.

Thanks

Sorry to dig up an old thread - but just wondering what all you guys with the V6 - 6sp Trans did with changing your Trans fluids ??

I have 49k on mine now and was just wondering when/if I should drain and fill the trans ?

I plan on keeping the car about 2 more years, which will bring me to about 80k and I plan on buying a new 'bu.

Just wondering if you changed your fluid or not and if you did, did you ever experience any problems.

I noticed the GM Trans Engineer was on here saying don't replace your trans fluid, but I don't think he has posted since then?

Thanks

I definitely don't know everything, and I've been wrong when I was 100% sure I was right, so here goes.

I don't see where any harm will come to the trans if you drain the fluid and refill it. The engineer was very pointed when he mentioned that the level is critical. You may want to measure what comes out so you can refill with a like amount.

I definitely don't know everything, and I've been wrong when I was 100% sure I was right, so here goes.

I don't see where any harm will come to the trans if you drain the fluid and refill it. The engineer was very pointed when he mentioned that the level is critical. You may want to measure what comes out so you can refill with a like amount.

Thanks - I also notice he stated that we shouldn't change our fluid at all ??

I do 95% highway with my car - so I am sure sure I am more 'easy' on the fluid then lots of stop and go....

Have you done yours ?? If so what ATF did you use ?

At 17,000 it's not ready yet. With my lead foot and using the manual shift button I figure I fall into the "Severe Service" category, so I'll change it around 50,000 or maybe sooner.

There is a 11 or 12 MM drain plug on bottom of trans. Pull taht and it will drain about 3 qts. I have dont is 4-5 times now. I did it 3 times in a row with 20-50 miles between each the first time. I do it about every other oil change now. I use this ATF going back in. http://www.amazon.com/Valvoline-VV324-MAXLIFE-DEXRONIII-Bottles/dp/B000CQ262C You can get this ATF at Advanced Auto or Autozone. Advanced has it in 4 qt. jugs and I get 3-4 of them at a time with online coupon, chose store pickup at times as I do the same thing with my F350, but it takes 10 qts. every time so I go through some fluid.

I do it about every other oil change now.

While I've got no problem with doing things like this a LITTLE more often than recommended........this is over the top excessive, in my opinion.

Using that kind of logic, you would be changing your oil about every 1500 miles and replacing your tires when 75% of the tread was still left.

Well the capacity of the trans is around 15 quarts. So, there is no way to get it all changed without a flush. Doing this is an incremental way of getting newer fluid in it. At $4/ qt for 3 qts. Every 10k miles. ( I use Mobile 1 synthetic motor oils o I got 5k miles between changes) I am happy to do this if it prolongs the need for a $4,500 trans. It is the easiest trans in the world to drain and fill. I do the Super duty about 1 time a year. To each his own but I own, license and insure 7 vehicles so my biggest mechanical failure fear are transmissions because they are a black art. 98% of time the diagnosis is “needs a new transmission”. My best friend is a body shop manager in a GM dealership. He has told me some interesting stories that have come out of the service department and downstream shops he deals with. The automotive industry is heavily loading with fraud. So, $12 every 4-5 months for ATF is fine by me in the 6 speed magic slushbox. I do know and have bought cars with Turbo 400 trans that have 200k on them and never changed and run fine. I don’t think the design and intent is there anymore for those results.

Thanks Guys - I guess I will change the fluid this or next weekend.