kenkaru

I searched for 30 minutes and I couldn't find all of the info I'm looking for.

What weight and how much fluid/additive do I need to put into my '98 rear.

I'm going to be replacing the pinion seal since it's been leaking for over 2 years now and there's prolly not much fluid left in there now.

I'm suprised there's no sticky for this yet.

Thanks!

freakynipples69

iTrader: (3)

I went with Royal Purple, and the heaviest they come in, forget exactly what weight. I just added 3.73's in my 10 bolt though, no other upgrade. The rear end takes about 3 quarts.

JGA

HI

For the Auburn use GL5 and the GM addative. You can get if from any GM dealer. Synthetic is not recommended for the Auburn differential.

JA

JNorris

iTrader: (4)

I use Lucas 80W90 Heavy Duty with my Auburn Pro.
It already has the posi. additive in it.

WickEdSix98

iTrader: (4)

The stock 10 bolt takes around 1.5 quarts and my 12 bolt took about 2 quarts.

kenkaru

thanks guys!
So for my 98, I've got an Auburn which means no synthetic.
I'll be using GL5 (1.5 qts) and the additive.