Gen V ACR best gearbox and differential oil for track use

Maxi_ACR

Enthusiast
Joined
Feb 26, 2026
Posts
3
Reaction score
0
Location
Monaco
Any suggestions on some aftermarket gerbox oils to use on the Gen V ACR gearbox and differential oils for track use ?

For the Gearbox should ATF still be used or anything better from Redline or Amsoil or other brands ?

For the diff the best would be the Castrol Transmax 75w140 ?
 
Last edited:

Pappy15

Enthusiast
Joined
Jan 20, 2026
Posts
2
Reaction score
2
Location
Phoenix Az
I have used the recommended OEM ATF and differential fluid since the car was new, and have never had an issue. I do change the fluids often, however, including before every track day.


You must be registered for see images attach
 

mblgjr

Enthusiast
Joined
Nov 13, 2013
Posts
118
Reaction score
0
If you're tracking extended periods look at Doug Shelby Engineerings trans/diff cooler setup. ATF if cheap/easy to change. Classic Valvoline Dex/Merc is what many Tremec builders stick with. Others have gone to Redline or BG SynchroShift. Tremec also has their own HP MTF.

Tick Performance, still uses dexmerc.
 

Latest posts

Members online

Forum statistics

Threads
154,459
Posts
1,691,143
Members
19,195
Latest member
Bob1972Ark
Top