03 Yukon rear end gear oil?

[mcrn]

I just bought some 75W90 Mobil 1 LS gear fluid. I looked on Amsoils web site for their recommendation and they list 75W90 and their 75W110. I am wondering if I can add a little 75W140 to the 75W90 to get more of a 110? Thanks.

 

[JasonC]

the 75w90 is fine for it

 

[Turk]

Yes, that Amsoil Severe Gear is what I'm running in my '03 GMC

 

[mcrn]

Tpitcher are you running the 75W110 or the 90? And I wanted the little extra because these rear ends are not know for their strength. I already had the bearings on the front replaced under the used car warranty.

 

[Turk]

I am running the Severe Gear 75w-90 in my '03.