Once again, I am writing here about a Toy Sequoia, since it is hard to findforums forit. I will be changing the oil in the transfer case soon. the owner's manual calls for 75w-90 gear oil. I want to use valvoline durablend but I can only find 80w-90. Does anyone know if I can use the durablend with the different viscosity rating? It is a GL-5 oil , which the manual states is fine.

 

Well even thoughan employeeat an auto parts store told me it would be ok, I decided to spend a few extra bucks and buy the 75w-90Valvoline Syntec ( fully synthetic ).