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Old 02-28-2011, 10:55 AM   #1
ChicagoMalibu2009
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Default Locking Gas Caps

Hey All,

I know we've discussed off and on Locking Gas Caps, their manufacturers, whether they throw codes (or would), etc...

Is there anyone currently using a Locking Gas Cap (for more than 6 months) who hasn't had any problems? Can we develop a consensus? It's IMO an annoying, undesirable addition, but with our cars not having a locked fuel door and gas approaching $4 a gallon here in Chicago...

I can hear the Plastic Tubing being assembled at the 'ole siphon factory (i.e. peoples basements) right now. It happened a good amount back in the $4 period before, so I'm trying to be proactive.

Thanks,
ChicagoMalibu2009
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Old 02-28-2011, 12:45 PM   #2
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Default Re: Locking Gas Caps

ive used 1 in the past,... ive also had to break into 1 repossessing a vehicle, i had the key to drive it but it was on E and it had 1 of those damn locking gas caps on it. also our repo trucks have them on the beds and havent had any problems out of those now that i think about it...
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Old 02-28-2011, 02:55 PM   #3
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Default Re: Locking Gas Caps

Quote:
Originally Posted by ChicagoMalibu2009 View Post
I can hear the Plastic Tubing being assembled at the 'ole siphon factory (i.e. peoples basements) right now. It happened a good amount back in the $4 period before, so I'm trying to be proactive.

Thanks,
ChicagoMalibu2009
You may want to check.

For instance, the 5th gen Malibus used a check ball at the bottom of the filler line to keep gas from spilling out on an overturn. A side benefit is - you can't get the siphon hose down into the gas tank. A locked cap may be nice anyway , to keep the hoi poi from pouring crap into the tank, but it won't add much to the ability to keep folks out of the tank

RwP
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Old 02-28-2011, 06:59 PM   #4
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Default Re: Locking Gas Caps

This is a good question and I am curious also. People around this area seem relentless to get what they want. Around my area we just got out of people stealing metal for scrap money. Anyways, if there is one more thing to keep people deterred it is worth it. If they can't do it quickly, they are more likely to give up and move onto something easier.
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Old 03-01-2011, 02:45 PM   #5
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Default Re: Locking Gas Caps

Bumpage.

Anyone else care to add any good or bad experience with these things?
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Old 03-09-2011, 09:59 PM   #6
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Default Re: Locking Gas Caps

Quote:
Originally Posted by elcompaLalo View Post
Bumpage.

Anyone else care to add any good or bad experience with these things?
I had picked up one made by Stant for my monte carlo some years back. However, the unlocking keys were rather frail and one broke off during use.

I picked one up from AutoZone prior to Christmas this past year for my Malibu and the keys are better and I have not noticed any change in mileage one direction or the other.
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Old 03-10-2011, 02:02 AM   #7
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Default Re: Locking Gas Caps

I had one for about 10 years before it began to fail. The plastic locking collar was slowly breaking. Eventually, I got a check engine light code - indicating a problem with the gas cap. I replaced it and am back to normal.

I'll be buying one for my Malibu soon. One key goes with each of my two keys ot the Malibu. Yes, I am increasingly concerened about persons stealing gas now that we have Obama-flation beginning.
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Old 03-10-2011, 08:24 AM   #8
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Default Re: Locking Gas Caps

Quote:
Originally Posted by Emmexx View Post
I had picked up one made by Stant for my monte carlo some years back. However, the unlocking keys were rather frail and one broke off during use.

I picked one up from AutoZone prior to Christmas this past year for my Malibu and the keys are better and I have not noticed any change in mileage one direction or the other.
What brand and part number is the one for your malibu?

Were you able to take off the stock cap without breaking the connection mechanism? No codes came up after the switch either?
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Old 03-10-2011, 02:23 PM   #9
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Default Re: Locking Gas Caps

Quote:
Originally Posted by ChicagoMalibu2009 View Post
What brand and part number is the one for your malibu?

Were you able to take off the stock cap without breaking the connection mechanism? No codes came up after the switch either?
I dug through my garage files for the info when I got home today.

It is a CST (Cooling Systems Technologies) part 5903. It is made in Israel, but the number off of the package is an 866-490-4357 and the company is based out of Mt. Carmel, Illinois.

No connection broken and no codes through the winter so far of this near three months time. When removing the stock cap, work on the piece attached to the car's gas cover, not on the cap connection. I pried it out by using a thin philips head screw driver. I still have the stock cap with the rubber connection on hand and ready to put back if anything does freak out on me.

Last edited by Emmexx; 03-10-2011 at 05:08 PM. Reason: Forgot part number Oops!
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Old 04-26-2011, 07:57 AM   #10
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Default Re: Locking Gas Caps

Quote:
Originally Posted by RalphP View Post
You may want to check.

For instance, the 5th gen Malibus used a check ball at the bottom of the filler line to keep gas from spilling out on an overturn. A side benefit is - you can't get the siphon hose down into the gas tank. A locked cap may be nice anyway , to keep the hoi poi from pouring crap into the tank, but it won't add much to the ability to keep folks out of the tank

RwP
So does anyone know if the newer Malibu's have the same check ball? Thinking about getting a locking gas cap now.
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