WTB: Diff Oil
Thread Starter
Teching In
Joined: Jul 2005
Posts: 11
Likes: 0
From: USA
WTB: Diff Oil What's the Best Gear Oil to Use in the Differential?
-Weight?/AMSOil, Redline, RP, etc.?
If I recall correctly, there is a TSB somewhere stating that you should use 75W-140...can't recall the exact weight...???
-Weight?/AMSOil, Redline, RP, etc.?
If I recall correctly, there is a TSB somewhere stating that you should use 75W-140...can't recall the exact weight...???
With stock gears I say you can run 75W-90, but with a gear change I say get the heavy 85W-140. Go with a fully synthetic, just pick a top name brand dont really matter. I went with Valvoline Dura Blend
TECH Veteran
Joined: Aug 2003
Posts: 4,954
Likes: 1
From: Kent WA
Amsoil makes a Severe Service 75w90 and a 75w140, which are excellent synthetic gear oils for high stress... especially a good idea if you're doing a gear swap in the stock 10 bolt and plan on doing any racing. Amsoil also makes a Long Life gear oil for longer drain intervals... If you have any questions, just shoot me a PM, I'm an Amsoil dealer and can ship anywhere in the US and Canada. 
