Re: Differential Oil Change - How the Heck?!

Posted by Ragtime Kid On 2015/10/3 20:11:58

JW,

I just filled the rear with Valvoline 85W-140 High Performance Gear Oil.

Can I use this in the manual trans as well. It says on the side of the bottle "for NONSYNCHRONIZED manual transmissions" and I know my transmission is synchronized.

I've had straight SAE-140 in there, but now that it's getting colder I'd like some multigrade to leave in year round rather than changing between 90W and 140W twice a year.