Pontiac G8 Forum banner

1 - 7 of 7 Posts

·
Registered
Joined
·
15 Posts
Discussion Starter #1
Can anyone tell me what transmission fluid came in the manual GXP’s? Having work done on my car, but at a standstill until it can be determined for certain what trans fluid is in my car. Called GM and another source, getting conflicting information.
 

·
Registered
Joined
·
2,008 Posts
Redline 30504 D4 Synthetic fluid is what you want. 4 quarts
 

·
Premium Member
Joined
·
5,109 Posts
Posed the question to Greg at Pace Performance and here's his reply...
The factory GM fluid is 88861800. I did put D4 in mine and seems to work well. Tremec says not to use a Dexron VI fluid, and to only use Dexron type III.
 

·
Registered
Joined
·
15 Posts
Discussion Starter #5
I appreciate all of the replies. Ended up contacting Tremec, who advised to use Dexron III or Mobil 1. Decided to go with the Mobil 1. I assumed a lot of the folks on this board have mods (I don’t) and take theirs to the track (also don’t), which may be why there are varied opinions as to what type to use. Thanks again!
 

·
Pontiac Crazy
Joined
·
459 Posts
Mobil 1 will be fine. I've been running that in mine for 3-4 years
 
1 - 7 of 7 Posts
Top