Hey, I bought some Valvoline gear oil which i think is rated 90w-140 (not exactly sure but it is way higher than what Toyota calls for) thinking that it will be better for the gears. I am starting to have second thoughts about using it now. Can anyone tell me if I will be doing any harm or if it is worth the added protection if it does coat the metal better? I have an E-locker if that makes any difference... Thanks.

 

I can't say whether or not it will cause damage but I see no reason to run it over the 75/90. If you question at all then why not just use what Toyota recomends?

 

I already bought the oil and don't want to take it back. (yeah I'm lazy) I probably will though...

 

id rather have to drive to take the oil back then drive to get a new diff...

 

Yeah that's true. I was hoping someone would tell me its good for the gears but may lower gas mileage or something but it seems that nobody has anything good to say about it.