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Thread: Tranny fluid?
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05-13-2007, 12:04 PM #1
Tranny fluid?
i have been planning on draining/ refilling my tranny fluid and i have a question on what to fill it back up with?...should i use the factory Mercon III ATF, A Synthetic ATF, or GM Syncomesh?...Ive heard some people say that synthetic isnt really good for it, and that syncomesh doesnt lubricate well untill its warm...Any opions would be appriciated!
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05-14-2007, 04:35 PM #2
well first off you dont have Mercon-thats FoMoCo. i put Amsoil synthetic unervisal ATF in mine. do you have a stick shift? how many miles do you have on your car and fluid?
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05-14-2007, 05:30 PM #3
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05-14-2007, 07:11 PM #4
- Join Date
- Sep 2006
- Location
- Shreveport, LA
- Age
- 38
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- 297
Black on black.- 2001 WS6 M6 (stock)
I run the GM fluid from the dealership. OEM fill. I had put Valvoline Dexron III in it at 75K miles and it shifted like ass. The OEM stuff has smoothed it back out.
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05-15-2007, 03:46 AM #5
any gm compatable atf would should work. i would go with synthetic tho. it keeps stuff cooler and protects better
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05-18-2007, 05:55 AM #6
- Join Date
- Sep 2006
- Location
- Shreveport, LA
- Age
- 38
- Posts
- 297
Black on black.- 2001 WS6 M6 (stock)
T56 rebuilds recommends Mobil 1, but keep in mind, this IS a shop that fixes tranny's. I just run the GM stuff. Never had an issue with it and GM would want the fluid to be as good as possible so they dont have to put a new $2500 tranny in for all the extended warrenty guys. THAT is losing money.
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