What grade of gear oil for the diff?
Thread Starter
Supreme Member
Joined: Jan 2000
Posts: 1,205
Likes: 93
From: Mississauga, Ontario Canada
Car: 1987 GTA
Engine: 5.7
Transmission: T5WC
Axle/Gears: 3:27
What grade of gear oil for the diff?
Going to change mine cause the cover is leaking. What grade of oil do I use? It's the Borg Warner rear end.
Supreme Member
iTrader: (3)
Joined: Sep 2005
Posts: 1,685
Likes: 3
From: MD
Car: '88 IROC-Z medium orange metallic
Engine: L98
Transmission: 700R4
Axle/Gears: 3.27
buy the best that you can afford but stay away from the $.99 cheapo crap. I use Royal Purple everything in my car but chances are that you can't justify spending $9/qt. Make sure that it's either got friction modifier in it or you add a bottle of it yourself.
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