6 speed transmission fluid change, When? [Archive] - Chevy Malibu Forum: Chevrolet Malibu Forums

: 6 speed transmission fluid change, When?


Red Ryder
05-30-2009, 01:41 AM
I've looked in the owners manual for the service interval for the 6 speed transmission fluid change, but can't seem to find it. I'm far from 30,000 - 50,000 miles that most tranys would need this. Does anyone know when it is.

Malibu Glow
05-30-2009, 08:47 AM
GM usually recommends transmission fluid change at 50,000 miles, check with the dealer on this to be sure since you're not finding the information in the owners manual, which is weird.

bballr4567
05-30-2009, 11:30 AM
You wont find it in the manual because its a "lifetime" fluid.

However, just get it done around 50k miles and thats it.

Macleod52
05-30-2009, 12:16 PM
You wont find it in the manual because its a "lifetime" fluid.

However, just get it done around 50k miles and thats it.

I will personally get the fluid changed at 30-50,000 miles.

Red Ryder
05-30-2009, 04:20 PM
All due respect BBallr, but nothing is "lifetime". Just like with engine oil, trany fluid has a service life and will break down with use. Since i do my own oil changes when required and document everything to the "t" to keep my 5/100 warranty in "no questions asked mode", I also want to keep the rest of the power train there too. I did find in the owners manual on page 6-6 "Additional Required Services"

* Change automatic transmission fluid (severe service only). Change filter (except 6-speed). See footnote (h).


* (h) Change automatic transmission fluid and filter
(except 6-speed) if the vehicle is mainly driven under
one or more of these conditions:

− In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
− In hilly or mountainous terrain.
− When doing frequent trailer towing.
− Uses such as found in taxi, police, or delivery
service.

Don't you think this is a little open ended?

Doesn't performed and documented service to the power train reflect an "under warranty covered repair" if it becomes necessary?

bballr4567
05-30-2009, 11:09 PM
Ryder, notice the " marks around the lifetime?? Its because GM says its lifetime fluid and will be fine. I would never let ANY fluid go that long.

Also, notice in what you posted. It says except 6 speed. That is for the 4 speed transmission.

86lxjunker
05-31-2009, 05:19 AM
Ok - so what kind of tranny fluid is in our 6sp's that GM is thinking that its a lifetime fluid.

I - just like Red - am very anal when it comes to fluid changes on all my vehicles.

I didnt even think about the trans yet as my 'bu only has 2k miles so far - but not changing the fluid in a 6sp GM trans kinda scares me...:eek:

So what gives....I guess I need to take a look at the trans and see how it is set up. From the post above - it even looks like the trans doesnt have a filter either ?

Macleod52
05-31-2009, 08:39 AM
Seriously, why are you guys worrying about this? Who cares if GM says it's lifetime or not. Get the fluid changed when you feel comfortable and everything will be fine. Lifetime is for the idiots who don't do any maintenance on their vehicles. Can it last the lifetime of said person owning vehicle? Probably, but why take the chance. Change the fluid between 30-50k and you'll be fine.

Red Ryder
06-01-2009, 03:31 AM
I seemed to miss where it explicitly says "No maintenance required" and "lifetime fluid, no need to replace it if you are the first owner". Like I said, it seems to open ended and doesn't feel right. Will try to ask someone at my dealership after all this Bankruptcy is over and hope and pray their not on the dealership closing list.

green03malibu
06-01-2009, 10:06 AM
it gets changed at 100,000 miles and it has dexron 6 fluid and that's what my dealer told me

Red Ryder
06-01-2009, 11:14 AM
Thanks green, but i would still like to see it in writing from GM.

bballr4567
06-01-2009, 11:31 AM
Decron VI is apparently two times as durable as Dexron III. Its GMs newest transmission fluid.

FOR RELEASE: 2005-04-01

CONTACTS

GM Introduces New Automatic Transmission Fluid For 2006 Cars and Trucks


* New factory-fill fluid standard in all 2006 MY Hydra-Matic transmissions
* Significantly improved viscosity, shift performance and fluid durability
* Available through GM Vehicle Care products as DEXRONŽ-VI
* Approved for service application on all prior model year Hydra-Matic automatic transmissions

Pontiac, Mich. - GM, in conjunction with Petro-Canada and Afton Chemical Corporation, have developed a new, improved automatic transmission fluid for all 2006 model year Hydra-Matic automatic transmissions.

Developed for factory-fill as RDL-3434 and registered for service fill as DEXRONŽ-VI, the new fluid represents a significant improvement in automatic transmission fluids and is the direct result of GM's industry leadership in the development and production of automatic transmissions.

"For 65 years, GM has led in the design, development and production of automatic transmissions," says Tom Stephens, group vice president for GM Powertrain.

"This knowledge and experience has helped us work directly with the petroleum industry to develop a new fluid that will further accentuate the performance and reliability of GM's Hydra-Matic transmissions."

Automatic transmission fluid (ATF) is considered the life-blood of the automatic transmission.

It is used to transfer power in the torque converter and provide the pressure to apply the transmission's various clutches and bands.

It also is used to clean, lubricate and cool the components of the transmission. GM's new transmission fluid, DEXRONŽ-VI, was developed to have a more consistent viscosity profile; a more consistent shift performance in extreme conditions; and less degradation over time.

Beginning with the design and development of GM's new Hydra-Matic 6-speed rear-wheel-drive transmissions, GM Powertrain engineers determined the need for a new transmission fluid to withstand the complexity of the clutch-to-clutch transmission operation.

Additionally, GM engineers identified opportunities to improve viscosity, durability, and impact on fuel economy with a new fluid.

"The development of DEXRONŽ-VI is the first time an automotive company has worked so closely with petroleum and additive companies to develop a new fluid," says Roy Fewkes, driveline fluids group leader, GM Powertrain.

"The result is a new fluid that significantly outperforms existing fluids in every aspect. In fact, we have had to significantly extend the length of our durability tests to fully test the fluid's capability."

Internal GM tests have demonstrated DEXRONŽ-VI to deliver more than twice the durability and stability in friction tests compared to existing fluids.

It also has demonstrated superior performance in pitting, foaming, oxidation and shear stability tests.

GM will begin factory-fill of the new transmission fluid on April 4, starting with the new Hydra-Matic 6L80, produced at the Willow Run transmission facility in Ypsilanti, Mich.

DEXRONŽ-VI will be available through genuine GM Vehicle Care products at GM authorized dealerships and service centers in Summer 2005. -

http://media.gm.com/servlet/GatewayServlet?target=http://image.emerald.gm.com/gmnews/viewmonthlyreleasedetail.do?domain=39&docid=13541

If they use the Dex VI in the heavy duty transmissions without requiring a change, I can only imagine what its like in our little cars.

green03malibu
06-02-2009, 07:35 PM
now in my owners manual, it states that you dont have to have the transmission fluid changed (and this is every fifty thousand miles) unless you live in a city, live in a hilly/mountain area, and/or use the vehicle for taxi, police...

i live in maryland on the eastern shore, 90,xxx miles, never had it changed and its still red, no leaks, still shifts smoothly.

Malibu Glow
06-02-2009, 08:21 PM
Think you better ask a service technician, it is recommended to change fluid and filter at 50,000 miles.

bballr4567
06-02-2009, 09:30 PM
Think you better ask a service technician, it is recommended to change fluid and filter at 50,000 miles.

Yes. However that is ONLY recommended with the 4 speed transmission. The 6 speed is a lifetime fill if you as ANY technician.

I still wouldnt go farther than 50k miles on the tranny fluid regardless of what the manufacture says.

luckycat
06-04-2009, 01:54 PM
Me too I'll probably get mine changed at 50K. I wish I could do it myself but seems like it is not so easy with this tranny this this DIYer.

Gibbles
08-14-2009, 05:50 PM
I'm in the same boat, but I have an 07 Aura with the 3.5.
My big issue is I cannot figure out where to fill/check fluid.

I was told it has the "lifetime" fluid, but I don't buy that, I want the fluid changed by atleast 60k and I plan on doing it my self.

ElantraMax
08-16-2009, 05:28 PM
On my 08 LT1 4 Cylinder. 4 Spd. There is no dipstick. Now this is going to sound stupid.

How do you check the fluid level?

I am going to change my Fluid and Filter at 30k.

Thanks

bballr4567
08-26-2009, 09:30 AM
There is NO dipstick. The only way to check the fluid is to pull the check plug which is just a bolt in the side of the transmission.

cavalier2000
08-26-2009, 09:53 AM
my cavalier was the same way....200k and never had an issue with it...though i don't personally recommend it

08LTZ
08-26-2009, 07:06 PM
I asked last time I was at the dealership and was told they recommend every 50,000 miles and it was around $150.00. I figure $150.00 every 50k miles is money well spent even if it's only "peace on mind".

Our 08 LTZ goes in next month for the service I'll keep you guys updated.

BackStreet
08-27-2009, 01:25 PM
My Catera also has a "sealed transmission". I had the fluid changed to synthetic at 70k and it shifts smoother then ever.

The trans on the Catera also did not have a drain plug so it made a huge mess when they dropped the pan. The mechanic said the fluid looked like crap. GM did make a gasket and a filter for it so it can be serviced.

mcr1010
09-16-2009, 09:26 AM
Has anyone been able to find a manual for the 08 Malibu? I have been told that none have been published yet; Childons, Haynes etc. Anyone know where I can get a little more detailed instr. on changing the trans fluid until a manual is available?
TIA

douglas92000
09-17-2009, 03:42 AM
Has anyone been able to find a manual for the 08 Malibu? I have been told that none have been published yet; Childons, Haynes etc. Anyone know where I can get a little more detailed instr. on changing the trans fluid until a manual is available?
TIA

This should help:

http://www.helminc.com/helm/search_service_owner.asp?Style=&class%5F2=CHV&mscsid=782BNW5K49VG8H1XHMCLJ3ULR4XE0T89

dieselinspec
06-01-2013, 06:32 AM
Let me add my two sense since my 2009 transmission is being replace at 113,000 miles. They contributed it to high mileage (laughable) and POSSIBLY dirty fluid, which I am not buying so get it replaced every 25,000 - 30,000 miles. Chevy doesn't have any 6 speed transmissions (call if you don't believe that) so take care or yours. It is costing me $2700.00 for a used one, so again take care of this very unique transmission.

malibu_2010
06-04-2013, 04:18 PM
Drain and refill is very easy on this 6spd and only costs ~$30 for a DIY. My BU is close to 70K now and I have done it 2 times so far. I'll be doing the 3rd time @ 75K.

cdobis
09-03-2013, 11:55 AM
I have 26500 miles on my 2011 and my tranny (6 Spd) doesn't want to go on cool mornings. What I mean is, it doesn't want to shift. It is a delayed shifting and stays that way until everything warms up. Is that a fluid problem or a module problem? Should I take it in to the dealer? :D
Thanks!

Rodents
09-03-2013, 09:21 PM
The first 3-4 shift seems delayed? That's normal, every one I've driven does that, 6T70 trans though. The 6T40, that's a delayed transmission no matter what. 6 cylinder has the 6T70, 4 cylinder has the 6T40. Fluid level okay? No check engine light?

fuels
09-08-2013, 04:05 PM
Drain and refill is very easy on this 6spd and only costs ~$30 for a DIY. My BU is close to 70K now and I have done it 2 times so far. I'll be doing the 3rd time @ 75K.

Hey since you had done it a couple of time already how much fluid did you use on the drain and fill? I look in the manual but it shows two amounts 5.3 or 6.3 How can I tell which transmission I have?

Thanks

Rodents
09-08-2013, 07:04 PM
4 cylinder has the 6T40 and V6 has the 6T70. SI lists 4.2 to 6.3 quarts for a drain and fill. Fluid level has to be checked at 180 to 200 degrees on the 6T70 and 185 to 203 degrees on the 6T40.

fuels
09-15-2013, 04:59 PM
Hey all I just did my transmission fluid change on the 2011, It was so easy with a drain plug. Lucky I did change it out because it was so dark brown in color. It took 4.3qts, since it was so easy I recommend changing it out every so often. I have under 40k. I don't under stand why people are holding out 100k for a service. Do the math $35 for the fluid, or $2000 for rebuilt service.

Now I wish the 06 Malibu was that easy.

fuels
09-16-2013, 07:01 PM
4 cylinder has the 6T40 and V6 has the 6T70. SI lists 4.2 to 6.3 quarts for a drain and fill. Fluid level has to be checked at 180 to 200 degrees on the 6T70 and 185 to 203 degrees on the 6T40.

Hey Rodents have a another question about the type of transmission, you list the 4cyl as a 6T40, but in the manual it shows this? It list X23F, is that another code type for the 4 cyl?

Transmission Fluid*
6 — Speed Automatic Transmission
(RPO X23F) — (Drain and Refill)
5.0 L 5.3 qt

6 — Speed Automatic Transmission
(RPO 6T70) — (Drain and Refill)
6.0 L 6.3 qt

Rodents
09-18-2013, 11:04 AM
2011 Malibu, right? 6T40 and 6T70 is all there is. What manual did you see this in?

fuels
09-18-2013, 05:02 PM
2011 Malibu, right? 6T40 and 6T70 is all there is. What manual did you see this in?

My owners manual in the glove box on page 12-4 that what it shows as for that info.

Rodents
09-19-2013, 10:40 AM
Yeah, it's like that in the online version too. Don't know what to tell you. To me it's identified as a 6T40 in service information.

Rodents
09-19-2013, 06:14 PM
Okay, I took a few minutes tonight and tried to figure out what X23F is, or what it means. If I go back to '09 Malibu, the RPO code MH8 trans is called out as an X23F in the Service Information RPO code list. If I go to '10 through '12 Malibu it's grouped as 6T30/6T40/6T45/6T50. I believe it is a 6T40 and there is an X23FHD which I believe is a 6T45 transmission. If you search 'X23F transmission' there are mostly references to the 6T40 and lots of the pages I looked at made no mention of an X23F. The 6T40 is also referred to as a GF6 as well, I never heard of that at all until tonight.

There is/was also an X22/X22F which I think comes back to an RPO MH6 and MY9 transmission. A 6T75 I believe.

One thing I did find out about are the differences between a 6T40 and a 6T45. The output chain is 1" wide on a 6T40 and 1.25" wide on a 6T45. The input gear set has 4 pinions on a 6T40 and 5 pinions on a 6T45. The 6T45 case is slightly larger and has heavier ribs for increased strength.

These are Hydramatic transmissions. Most of the Hydramatic transmissions are currently identified by the number of forward gears (6), longitudinal (L) or transverse mounted (T) and the relative torque capacity as a two digit number (40) or (70). So you end up with a 6T40 or a 6T70 transmission. I've seen relative torque capacity listed as low as 30 and as high as 90. 4T45-E is a 4 speed, transverse mounted transmission with a relative torque capacity of 45 and is electronically controlled which accounts for the E. The E is now gone as far as I know since all of our current transmissions are electronically controlled. The Aisin transmissions are identified differently, as are most of our current manual transmissions. There was a Getrag manual trans back 10 years ago or so that was an F23 for an identification.

Hope that cleared up some questions.

fuels
09-19-2013, 07:20 PM
Well thank you for doing your homework on that. I guess Chevy hasn't updated the manual. They must of left the old info as is.

rreilly
10-04-2013, 09:01 AM
i"m about to change the fluid in my 08' 4cyl, and have a question. Does the engine need to be running to check fluid level? i"m gathering that you dont need to, but I did read on a blog that you should pull the check plug while running or you will loose a lot of fluid. I know all dip stick transmissions need to be running. I haven't done a check plug tranny yet. Thanks guys.

DrivenDaily
10-04-2013, 03:14 PM
Search the forums a little. Rodents is a Certified ASE and GM Tech and has posted a number of times how to check the fluid.

Rodents
10-05-2013, 06:04 PM
i"m about to change the fluid in my 08' 4cyl, and have a question. Does the engine need to be running to check fluid level? i"m gathering that you dont need to, but I did read on a blog that you should pull the check plug while running or you will loose a lot of fluid. I know all dip stick transmissions need to be running. I haven't done a check plug tranny yet. Thanks guys.

Yes, it must be running or you'll lose a lot of fluid. Trans fluid temp is critical on the 6 speeds for an accurate reading of the level. 185 to 203 degrees which is not easy to maintain sometimes. The 4 speeds are easier, must be above 104 degrees.

BJackson
11-19-2013, 07:41 PM
Twin Transmission in Indian Trail NC is an expert on the 6t70 transmission. Even if you aren't local to their area, you should read through their blog. They have a lot of tips on there about fluid changes, tranny problems, repair solutions and more.

balkey
01-09-2014, 09:05 AM
I have a 2009 2.4L, 6spd with 82,000 miles (original fluid)

Tranny shifts fine when giving consistent gas BUT when in traffic or starting from a stop it is pretty jerky (which has always been the case but has gotten worse over time)

I'm planning to change the fluid this spring, but i DON'T want to make it worse....... what would you guys recommend?

wazy
05-18-2014, 08:47 PM
Ryder, notice the " marks around the lifetime?? Its because GM says its lifetime fluid and will be fine. I would never let ANY fluid go that long.

Also, notice in what you posted. It says except 6 speed. That is for the 4 speed transmission.

I just changed my tranny fluid at 223,000km -(6 speed 2.4liter) I was going with what is said in the owners manual about not having to change the fluid but thought I would change it anyways - Wow - the fluid looked like motor oil - it was black! Based on what the fluid looked like I should have not gone with what the owners manual said at all - I'm hoping I didn't do any damage to the tranny by leaving it in there so long? I guess time will tell but based on what this fluid looked like after 223,000KM there is no way this is a lifetime fluid!

Wazy

rodhotter
05-20-2014, 10:18 AM
VW had lifetime fluid until issues THEY had to pay for! changer their tune in a hurry. usually lifetime is until warranty is gone, 5 yrs usually before 100,000 miles, then its your $$$$. some automatics can be changed by machine that replaces ALL the fluid, a typical drop the pan job gets about a third to half the fluid

wazy
05-31-2014, 09:59 PM
I just changed my tranny fluid at 223,000km -(6 speed 2.4liter) I was going with what is said in the owners manual about not having to change the fluid but thought I would change it anyways - Wow - the fluid looked like motor oil - it was black! Based on what the fluid looked like I should have not gone with what the owners manual said at all - I'm hoping I didn't do any damage to the tranny by leaving it in there so long? I guess time will tell but based on what this fluid looked like after 223,000KM there is no way this is a lifetime fluid!

Wazy

As an update - after changing the fluid it still looked nothing like the fluid i was putting in so I did a second transmission flush and now it looks like it has a fresh fluid change. Everything is looking good now and I feel more comfortable with doing a second flush. I don't know hat others here have experienced with their Malibu as far as reliability is concerned but in 223,000 km all I have spent up to this point on the engine and drive train is a total of $68.00 - ( 4 spark plugs and 2 air filters) not even a check engine light has come on in this car - I now have now just changed the antifreeze and installed new front struts and put on a new serpentine belt but after looking at the belt after 223,000 km it still looked like it was new so add another $335.00
- $225.00 for the struts , $20.00 for the belt and, $70.00 for the tranny fluid and $20.00 for the antifreeze This Malibu hasn't been to a repair shop in in over 3 years - and that was for the front brakes and the final inspection before the warranty ran out. The only issue I have had in the last three years was the windshield wiper arm assembly popped off the ball joint so I snapped it back on and that was about 2 years ago - other than that and some wheel bearing issues a long time ago which were covered under warranty it has been the most reliable vehicle I have ever owned - I am still on my second set of brakes which will most likely need doing shortly. Everything on this car still works perfectly just like the day I bought it - So Needless to say I am extremely happy with my Malibu!

wazy

thedopefishlives
06-07-2014, 12:34 PM
Yeah, a fluid change (as in a drain and replace) doesn't get it all. I did a drain and replace in my Malibu at about 70,000 miles and it looked like well-used engine oil. I just finished flushing it and even the 5 fresh quarts I'd put in at that time didn't make it look any better. The recommended service interval on transmission fluid is 100,000 miles, but at 85,000 and AFTER a drain/replace, the flushed fluid still came out nasty black and thin. I'm thinking I will probably service it a bit more often than 100,000 miles, since I've already had to sell one previous vehicle due to a burned-up automatic transmission.

Project84
07-01-2014, 09:05 AM
Yes, it must be running or you'll lose a lot of fluid. Trans fluid temp is critical on the 6 speeds for an accurate reading of the level. 185 to 203 degrees which is not easy to maintain sometimes.

I'm curious about this statement. It seems counterproductive to obtain 200*F and get less fluid, if you get more fluid out of the drain when cold.

I understand the idea of a fluid drain/refill as to replace as much old/used fluid as possible. So if doing it cold would get more fluid out, then what's the sense in doing it hot? :confused:

I'm wanting to do my trans tonight but I'm apprehensive of all the how-to's I've read... they always stress the importance of getting the trans up near 200*F, but I don't quite understand why.

I was directed to this info in a different forum:
http://workshop-manuals.com/vauxhall/astra-j/transmission/transaxle/automatic_transmission-_6t30/6t40/6t45/other_information/transmission_fluid_level_and_condition_check/


I will likely do mine as per the above link, whether I understand the reason or not for getting it hot, and then do it again at next oil change. Two changes within 5k miles should help alleviate any worry in the next 30k.

Drunken Elvis
07-01-2014, 10:56 AM
The fluid is to be hot when checking the level.

If you do not have a dip stick, this is a potentially dangerous operation, getting under a running car on jack stands.

When draining the transmission, it will flow out better when warm but there is not need for it to be hot.

Project84
07-01-2014, 11:19 AM
I think I was/am misunderstanding the difference between pulling the "fluid level check plug" and actually pulling the transmission "drain" bolt.

So to do the drain, just do it after driving home from work, trans will be hot. Support car on 4 level jackstands, get under trans, find drain bolt, pull it and drain 4-6 quarts out. When refilling, put in 3.5-4 quarts from Dexron VI, pull "fluid level check plug" and idle engine while slowly adding final quart to 1.5 quart until it just barely weeps out of "check plug".

Done.


Right?

DrivenDaily
07-01-2014, 11:32 AM
I think I was/am misunderstanding the difference between pulling the "fluid level check plug" and actually pulling the transmission "drain" bolt.

So to do the drain, just do it after driving home from work, trans will be hot. Support car on 4 level jackstands, get under trans, find drain bolt, pull it and drain 4-6 quarts out. When refilling, put in 3.5-4 quarts from Dexron VI, pull "fluid level check plug" and idle engine while slowly adding final quart to 1.5 quart until it just barely weeps out of "check plug".

Done.


Right?
Yes.

Fluid drain does not need fluid to be hot, but engine needs to be off and car does not need to be level.

Determining the level requires the fluid to be at a certain temp, engine running, car level.


Sent from the mobile phone of DrivenDaily!

Project84
07-01-2014, 12:00 PM
Got ya. So while I'm under it doing engine oil/filter change today, I will go ahead and drain the trans, refill with similar amount that I drain out, lower the car, drive around the block a few times and come back and do the "fluid level check plug" deal and watch for it weeping in idle w/ trans hot.

I was a bit confused but I got it now!

Project84
07-01-2014, 12:33 PM
So now my only question is, although it's made very obvious ONLY DEXRON VI in the 6-speed auto, I'm wondering if I can use Valvoline MaxLife ATF which I have at home, it's a synthetic ATF.

Pulled this from Valvoline website:
Does GM recognize MaxLife ATF and is this an acceptable fluid to use in place of Dexron VI?

GM only recognizes their factory fill fluid for Dexron VI, but Valvoline meets and exceeds the performance requirements for the specification, and we stand behind the product 100% for this specification.

Suitable for use in:
GM DEXRONŽ-II, DEXRONŽ-III and DEXRONŽ-VI applications

The Valvoline MaxLife™ ATF Advantages:
• Synthetic fluid
• Conditions transmission seals to prevent leaks
• Reduces varnish formation and wear
• Our best anti-shudder performance
• Improves and maintains smooth shifting longer than conventional automatic transmission fluids
• Superior anti-shudder performance
• Provides excellent flow properties at low temperatures and greater film protection at high temperatures
• Maximizes the life of higher mileage transmissions

DrivenDaily
07-02-2014, 04:08 AM
Three times they allude to the anti-shudder characteristics so they must really mean it! Full syn means it'll flow at lower temps more quickly than dino-based oil. "Conditions seals..." can be any number of things, from something that swells the seals and then later dries out so they crack and leak, to stuff that actually helps keep them good.

Maybe consider writing them and asking if they warrant it for use and any issues that might come up with any warranty you have if that warranty suggests that the fluid caused the malfunction.

Other than that just use your good judgment.

rodhotter
07-02-2014, 07:44 AM
this is where a dealer or independent shop that has a tranny fluid machine is the way to go. most but not all slush boxes have provisions for that. if not more frequent or changing several times after driving will prolly work, cheap insurance compared to cost of a tranny!

Project84
07-02-2014, 10:24 AM
The issue I'm having is that I went to 2 parts stores and Walmart looking for Dexron VI and didn't find it. I checked some fluids I had at home and the Full Synthetic Mobil 1 ATF specifically said only for 2006 and older automatics and is not compatible with Dexron VI, but the Valvoline MaxLife Full Synthetic says it is compatible w/ Dexron VI.

This Valvoline MaxLife is the only thing I found that mentioned being compatible w/ Dexron VI out of all the ATF's I looked at in the parts stores and Walmart.

So if so many of you have done your own trans service in your driveway/garage... just where are you finding your fluid and what brand and type is it?!

Project84
07-08-2014, 12:26 PM
So the ONLY Dexron VI I can find anywhere is the Valvoline MaxLife ATF which is a synthetic as stated above.

I don't wanna use it.

I looked it up and seen I paid $7/qt for it a few months back when I was using it to service my '01 Saturn auto trans.

I have 6 quarts of it.

I called GM dealer an they want $9.28/qt for their GM Dexron VI. I'm not sure how much fluid I'll need, I'm assuming 6 quarts is safe to buy. So I'll be spending an additional $56 on the GM Dexron VI.

Can ANYONE AT ALL advise me as to what fluid you used when you did your own DIY trans service? If it's been proven safe that many of you have in fact used the Valvoline MaxLife stuff, I will use mine as well.

I don't get why EVERYONE ON HERE that has said they did their own service has not yet mentioned what brand fluid they used or where to got it, and only ONCE was it mentioned how much fluid was needed, someone said they drained 4.3 quarts out of a 6T40. (2.4L 6sp auto)

Drunken Elvis
07-08-2014, 12:44 PM
I have used Castrol and Mobil. They both make a dexron VI atf fluid. I am surprised you are having trouble finding it. I bought the Castrol at walmart.
http://www.autozone.com/autozone/accessories/Fluids-and-Chemicals/Transmission-Fluid/_/N-25aa?filterByKeyWord=dexron+vi&fromString=search

Project84
07-08-2014, 01:52 PM
Found the Valvoline Dexron VI (full syn) at a local parts store I hadn't checked yet.

It specifically says for use in Dexron VI (2006+) vehicles. But somewhere I read someone said if it's fully synthetic, it's not correct. Hrmmmm This is such a cluster@#(%*#$>

I checked valvoline's website and the bottle of Dexron VI, they both state "GM Licensed and Approved for Dexron VI" so I'm going with it.

Fugg it. This is annoying!

Drunken Elvis
07-08-2014, 02:11 PM
It does not matter if it's full synthetic, semi synthetic or made of gummy worms. If it meets Dexron VI specs it's good.

If you want the best, I'd find a full synthetic that meets Dexron VI. No guarantee that it's better than a semi synthetic but it probably is.

BruceH
07-08-2014, 02:16 PM
This list from GM may help .....

http://www.gmpowertrain.com/VehicleEngines/DEXRON-VI.aspx

Project84
07-08-2014, 02:16 PM
Well, I made the situation worse on myself by finding Valvoline MaxLife ATF (full synthetic) that states on the back it is NOT licensed or approved by GM, but meets and/or exceeds Dexron VI specifications... so I thought I was good to go.

Then I read online where people were saying not to use it, because Valvoline actually offers Dexron VI full syn that IS licensed and approved by GM for Dexron VI applications.

I blame Valvoline. So confusing!

I'm good now.

Project84
07-08-2014, 02:19 PM
This list from GM may help .....

http://www.gmpowertrain.com/VehicleEngines/DEXRON-VI.aspx

That is perfect! Thank you... I am worry-free now. ;)

Project84
07-09-2014, 04:39 AM
Car at 114k - previous owners were great at neglecting it so I'm positive it was never serviced...

Okay - to reiterate what others here have said...

For GM to call that a "lifetime filter and fluid" is idiotic. What came out of my 6T40 was like black water. I put my hand right in the stream and it was pure black and left little film residue behind on my hand. It was NOTHING close to what I'd call a lubricant. Granted, the Valvoline Dexron VI was really thin straight out of the bottle too, but at least between fingertips it felt slippery.

Now I'm really wanting to dig deeper and change the transmission filter as well at my next oil change service/trans service in 4k miles.

Who has done a transmission filter on the 6-speed auto 6T40? Anything special? I know they're only like $20, so hopefully a lot of you have changed them. After seeing what came out of my transmission I won't feel confident in it's lifespan unless I change the filter!

thedopefishlives
07-09-2014, 04:58 AM
Car at 114k - previous owners were great at neglecting it so I'm positive it was never serviced...

Okay - to reiterate what others here have said...

For GM to call that a "lifetime filter and fluid" is idiotic. What came out of my 6T40 was like black water. I put my hand right in the stream and it was pure black and left little film residue behind on my hand. It was NOTHING close to what I'd call a lubricant. Granted, the Valvoline Dexron VI was really thin straight out of the bottle too, but at least between fingertips it felt slippery.

Now I'm really wanting to dig deeper and change the transmission filter as well at my next oil change service/trans service in 4k miles.

Who has done a transmission filter on the 6-speed auto 6T40? Anything special? I know they're only like $20, so hopefully a lot of you have changed them. After seeing what came out of my transmission I won't feel confident in it's lifespan unless I change the filter!

If your transmission is the one I'm thinking of, you can't change the filter. No, really - the 6T40 on the 4-cylinder Malibus has an internal filter that you have to disassemble the transmission to get to. Combine this with the lack of a simple dipstick for checking the level, and you start to get an understanding of what Chevrolet (and other car manufacturers as well, though less obviously) is trying to accomplish.

Project84
07-09-2014, 05:09 AM
If your transmission is the one I'm thinking of, you can't change the filter. No, really - the 6T40 on the 4-cylinder Malibus has an internal filter that you have to disassemble the transmission to get to. Combine this with the lack of a simple dipstick for checking the level, and you start to get an understanding of what Chevrolet (and other car manufacturers as well, though less obviously) is trying to accomplish.

If you mean - sell sh!t that will inevitably fail because of improper manufacturing to allow for proper PM care, at an expense of $2k+ then yes, I am understanding that part very clear at the moment. :mad:

I kept reading where the 6T40 filter isn't repleacable, but it looks like all other internal filters. I guess I didn't take into account the fact it could possibly be build up/into the transmission and not easily accessible by dropping the pan. I just assumed people were saying it wasn't serviceable because of the PITA it would be to drop the pan and access it.


Well... damn.


Now I wish there was a forum just for the 6T40 so I could go read up on how to get to the damn filter! Or a sign up list to track how many miles people are getting out of them before failure!

I was really hoping this car would last until 160-180k. I'm betting the engine will... I'm betting against the transmission.

thedopefishlives
07-09-2014, 05:32 AM
If you mean - sell sh!t that will inevitably fail because of improper manufacturing to allow for proper PM care, at an expense of $2k+ then yes, I am understanding that part very clear at the moment. :mad:

I kept reading where the 6T40 filter isn't repleacable, but it looks like all other internal filters. I guess I didn't take into account the fact it could possibly be build up/into the transmission and not easily accessible by dropping the pan. I just assumed people were saying it wasn't serviceable because of the PITA it would be to drop the pan and access it.


Well... damn.


Now I wish there was a forum just for the 6T40 so I could go read up on how to get to the damn filter! Or a sign up list to track how many miles people are getting out of them before failure!

I was really hoping this car would last until 160-180k. I'm betting the engine will... I'm betting against the transmission.

With proper fluid changes, I've heard nothing bad about the 6-speed transmissions in the later models. Earlier models in the Gen7 life cycle had the bad 3, 5, R wave plate that you can find numerous threads on in this section. I agree with the sentiment on car manufacturers selling things that are unmaintainable; I've been working on my own cars since before I could even drive them, but I still do all the service that I can do. That list is shrinking slowly as I upgrade my stable to newer models.

rodhotter
07-09-2014, 09:42 AM
just like engine oils, certifications cost $$$, not thats its any better but its certified$$$$$, plus GM gets $$ on every qt sold

wazy
07-15-2014, 06:11 AM
Car at 114k - previous owners were great at neglecting it so I'm positive it was never serviced...

Okay - to reiterate what others here have said...

For GM to call that a "lifetime filter and fluid" is idiotic. What came out of my 6T40 was like black water. I put my hand right in the stream and it was pure black and left little film residue behind on my hand. It was NOTHING close to what I'd call a lubricant. Granted, the Valvoline Dexron VI was really thin straight out of the bottle too, but at least between fingertips it felt slippery.

Now I'm really wanting to dig deeper and change the transmission filter as well at my next oil change service/trans service in 4k miles.

Who has done a transmission filter on the 6-speed auto 6T40? Anything special? I know they're only like $20, so hopefully a lot of you have changed them. After seeing what came out of my transmission I won't feel confident in it's lifespan unless I change the filter!

I finally changed my fluid at 225,000KM and yes it was black - I ended up using Valvoline Dextron VI but flushed it twice - after the first flush the transmission color went from black to light brown and nothing like the bright red new Valvoline - After the second flush it now looks clean and like the new Valvoline I put in. Sure it cost me $70.00 for the 2 jugs but that's far cheaper than a new tranny - Im not going to wait another 225,000 km to change it again - Im going to let it go only 100,000 km this time before I flush again.

Wazy

Project84
07-15-2014, 08:53 AM
That's impressive mileage wazy, I hope mine last that long or longer!

I'm planning to do my second trans drain/fill in 4k miles when I do the engine oil/filter change.

wazy
07-16-2014, 02:37 PM
That's impressive mileage wazy, I hope mine last that long or longer!

I'm planning to do my second trans drain/fill in 4k miles when I do the engine oil/filter change.

My Malibu has been extremely reliable especially in the last 3 years - I had some wheel bearing issues early on but I still have never even had a check engine light come on and the only maintence I've done other than just into my 3rd set of brakes and 3rd set of tires is a new serpentine belt which still looked like new at 225,000 km , 4 spark plugs, 2 air cleaners an antrifreeze flush plus new front struts which I did myself - the car has not been in the shop now for anything in 3 1/2 years - it' never been on a tow truck but I'm sure my days are numbered. I was a little skeptical about a 4 cylinder but this car has been nothing but a complete surprise reliability wise. When I changed the struts I had an alignment done and the mechanic couldn't believe how nice the car drove considering the mileage. I'm hoping for another 225,000 km but we will have to see what happens!

rodhotter
07-16-2014, 04:03 PM
if neglected multiple "changes" are recommended as you only get about 1/3 of the fluid. if that tranny can connect to a tranny fluid machine its best, as almost all the fluid can be removed for fresh. thats why you should change fluid early on + on a regular basis. pay a little now or a lot later $$$$$$$

Project84
07-17-2014, 04:18 AM
My Malibu has been extremely reliable especially in the last 3 years - I had some wheel bearing issues early on but I still have never even had a check engine light come on and the only maintence I've done other than just into my 3rd set of brakes and 3rd set of tires is a new serpentine belt which still looked like new at 225,000 km , 4 spark plugs, 2 air cleaners an antrifreeze flush plus new front struts which I did myself - the car has not been in the shop now for anything in 3 1/2 years - it' never been on a tow truck but I'm sure my days are numbered. I was a little skeptical about a 4 cylinder but this car has been nothing but a complete surprise reliability wise. When I changed the struts I had an alignment done and the mechanic couldn't believe how nice the car drove considering the mileage. I'm hoping for another 225,000 km but we will have to see what happens!

That's the exact opposite of my car. Picking it up last month, I don't think I've spent more than 2 days away from fixing something on it. Had I not been of the DIY type, I would've easily poured thousands of dollars into this thing. As it is, I've only got about $500 in parts and she's performing very well.

FYI - if you did the front struts, go ahead and do the rear shocks. It's 15 minutes per side and the Monroe's only cost $30 each. There is literally 3 fasteners once you get the wheel off and they're all easily accessible. You don't even need to pull any carpet or rear seats. The difference is noticeable, and at 140k, you'll be happy you did it!

wazy
07-17-2014, 09:14 PM
Thanks for the info John - I didn't think it was that easy - they are definitely getting soft so if that's all there is to it then I am going to change them.

Wazy

Project84
07-18-2014, 04:58 AM
Sorry we've gone off topic here!

You're welcome wazy,

I believe the size is a deep-well 13mm socket for two nuts on the top of the shock mount, and I think it was 19mm for the bottom bolt.

Lisle makes a tool for holding the shock threaded portion while you tighten the (Monroe provided SAE size) 9/16" nut on top of the shock. Or you can use an adjustable wrench like I did. lol

Here's the tool I'm talking about -
http://www.amazon.com/Lisle-20400-Universal-Shock-Absorber/dp/B000CO88C6/ref=sr_1_1?s=automotive&ie=UTF8&qid=1405683962&sr=1-1&keywords=lisle+shock+absorber

It really is a 30 minutes job start to finish and makes a big difference!