What diff fluid is the best for my 92 Z-28?
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From: in a van with a man named caveman dan
Car: My motorcycle and switchblade knife
Engine: 383 stroker
Transmission: it's really big, catipiler?
Axle/Gears: 1:10 mainly low end
What diff fluid is the best for my 92 Z-28?
What diff fluid is the best for my 92 Z-28?
Joined: Aug 1999
Posts: 19,282
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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From: Charmhaven, Australia
Car: 1999 subaru forester GT (urgh)
Engine: ej20 turbo
Transmission: 5speed
Axle/Gears: 4.11:1 awd
Depends if it has a limo (LSD) in it. Limo specific oils have friction modifiers in them. If it's an open diff (no LSD) get normal fluid. Not sure of the best weight though, although most of em are pretty heavy. Use a good quality synthetic (if u can get it/afford it) as well.
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
"Best" at what? Meeting manufacturer warranty requirements? Making the differential quieter? Protecting the works from wear? Lasting the most miles? Making lofty claims with no foundation in the real world? Making your wallet lighter?
As James implied, there are almost as many opinions as there are opinion holders. Personally, I use AMSOIL Longlife 75W90 synthetic in my lighter duty daily driver applications (contains the friction modifiers for limited slip diffs), and Extreme Pressure 75W90 synthetic in my towing and racing applications.
As James implied, there are almost as many opinions as there are opinion holders. Personally, I use AMSOIL Longlife 75W90 synthetic in my lighter duty daily driver applications (contains the friction modifiers for limited slip diffs), and Extreme Pressure 75W90 synthetic in my towing and racing applications.
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