View Poll Results: Perferred diff fluid
GM
42
53.16%
Royal Purple
13
16.46%
Amsoil
15
18.99%
Redline
4
5.06%
Redline 75/140
5
6.33%
Multiple Choice Poll. Voters: 79. You may not vote on this poll
POLL: Perferred Diff fluid
Instructor
Joined: Oct 2010
Posts: 112
Likes: 2
From: Phoenix Arizona
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Le Mans Master
Joined: Feb 2007
Posts: 8,514
Likes: 235
From: Currently somewhere in IL,IN,KY,TN,MO,AR,MS,AL, or FL
And GM seemed to have finally after 40 years found the solution. The new GM fluid seems to have permanently cured that issue.
Melting Slicks
Joined: Dec 2006
Posts: 2,694
Likes: 106
I just ordered 3 bottles (GS manual tranny takes more, due to the cooler) of Dexron LS because I read it's 100% synthetic, not a blend. Which one is it? Just curious. Thx.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Though a little dated now, most of the above options were included in this AMSOIL commissioned study. Many may consider this a biased study, but even if you discount AMSOIL in the study, the results between all the others is educational:
AMSOIL Gear Lube “White Paper” (2 MB pdf file)
For those that chose the AMSOIL option:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
AMSOIL Slip-Lock Differential Additive (Product Code ADATB)
... I’m happy to offer forum members dealer wholesale prices, about 25% below retail, for forum members via the AMSOIL Preferred Customer Program. Drop me a PM if interested.
AMSOIL Gear Lube “White Paper” (2 MB pdf file)
For those that chose the AMSOIL option:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
AMSOIL Slip-Lock Differential Additive (Product Code ADATB)
... I’m happy to offer forum members dealer wholesale prices, about 25% below retail, for forum members via the AMSOIL Preferred Customer Program. Drop me a PM if interested.
__________________
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
I can't believe the GM fluid is winning out. That stuff, along with the limited slip additive costs a small fortune. Royal Purple is way cheaper, readily available and already has the additive in it.