Okay simple question probably.
I have the G80 rear end in my Chevy Silverado and Tahoe. I need to change the gear oil and I've read numerous GM bulletins saying not to add the friction modifer because the G80 in my truck is a locker not a limited slip like the G80 in cars. Apparently there is a lot of confusion on this but I know it says not to add the modifier.
My question is this. I was going to use Mobil 1 75W-90 but it says it has friction modifiers in it already for limited slip differentials, but then it goes on to say if you need more modifiers you can purchase OEM modifier additive. Is it okay to use in my G80? The Mobil 1 statement has me a little confused on the has modifiers but you can add more?
I have the G80 rear end in my Chevy Silverado and Tahoe. I need to change the gear oil and I've read numerous GM bulletins saying not to add the friction modifer because the G80 in my truck is a locker not a limited slip like the G80 in cars. Apparently there is a lot of confusion on this but I know it says not to add the modifier.
My question is this. I was going to use Mobil 1 75W-90 but it says it has friction modifiers in it already for limited slip differentials, but then it goes on to say if you need more modifiers you can purchase OEM modifier additive. Is it okay to use in my G80? The Mobil 1 statement has me a little confused on the has modifiers but you can add more?