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camaro2you
07-14-2005, 07:43 AM
What oil are you guys running in your posi's?
The Fixer
07-14-2005, 08:09 AM
Valvoline 80W90 in the rear of my SS. I have a Powertrax locker, which doesn't require any additives. If you have a posi, use two bottles of the GM additive. It's the best stuff on the market to keep the clutches happy.