75w-140 differential Fluid

[tenikiwon]

What do I buy. It list this but the book also had a star. I think for the Limited Slip. Fleet Farm unfortuneately doesn't have or sell 75W-140. The closest is 85-140 pr 80-90 (I think)

I would like to swap front/rear fluids this Friday when I'm doing several others things.

Sorry for the post if this has been answered before, I searched quickly.

Also, for the T-case/Tranny I've been told that they both use the same stuff by one shop and different stuff by an other shop. Do I NEED Mercon 5 or is Mercon 3 good enough?

T-case swap starts Friday!!

 

[Opera House]

Standard Mercon for transfer case

I run 85W-140 in my rear diff. I was showing wear by the color of fluid and magnet. It was worth opening up to clean it when I did a wheel seal. I would have put in thicker if they had it. Front still looks pristene. That's one cover I'm never taking off!