Fluids Question

[mconstable]

Hello all, I'm posting for a good friend of mine that recently bought a '93.

I have limited access to the computer right now, or I'd do a search, so thanks for any help and understanding.

We want to change his diffs, t-case, and trans (5-spd)

Need opinions on weights, brands, any recommended additives, etc.

Thanks in advance!

 

[HRDROKN]

I would run Amsoil 75-140 in the diffs (no additive even for LS diff) and 75-90 MTG in trans/t-case. I have used Amsoil products for more than 20 years and have been very happy with the results! Chevron also has some really nice extreme duty synthetics, but as the saying goes... if it isn't broke... etc.