Diff Lube Question

[mconstable]

Hello all, just wanted to get input on the different weights of differential fluid and their pro's/con's.

such as 75/90 vs. 75/140...

Thanks!

 

[4xquadrod]

I would stick to factory recommendations on the weights.

 

[Diesel Power]

75w-90 should work just fine :-laf 75w-140 is for severe towing and much bigger applications

 

[klenger]

75W90 synthetic is (edit: the only lube) recommend for all 3rd gen applications.

 

[mconstable]

Thanks guys!!