Diff and T-case annoying question-sorry

[POWDR]

I will be doing all my fluids as I am pretty sure the previous owner may have never (or at least long intervals) changed them.

As per the manual, I will be using 80W-90 up front and 75W-90 in the rear.

This is the annoying part. What brand do you prefer and any particular reason ie:used these two and brand x looked better after x miles?

I realize I will get differing answers and possibly a flame or two. I am prepared for it so go ahead:thumb:

I am really interested in comparisons as stated in the example above, but give me what you got. Thanks in advance:beer

Oh yeah, looks like 5W-30 in the T-case....same question

 

[coldLBZ]

I use a syn 75w90 in the front and rear diffs, and a syn 5w30 in the T-case. As for brand I use Amsoil, mainly because I have access to it for a good price.

 

[POWDR]

Yup def going with a syn. I figured I would hear a lot of amsoil responses. Just curious if anyone has comparisons or are all gear syns created equal these days?

 

[04D_MAX]

what is the capacity of the front and rear diffs?

 

[coldLBZ]

2 qts in the front, 4 qts in the rear and I put 3 qts of syn 5w30 in the T-case.

 

[04D_MAX]

2 qts in the front, 4 qts in the rear and I put 3 qts of syn 5w30 in the T-case.

thanks:thumb:

 

[ceide4489]

Always been an amsoil fan

 

[IronDX]

I used Mobil 1 syn 75W-90 in both diffs, & TranSynd in the Tcase.