Randal McSandal

iTrader: (3)

I'm quite meticulous about my car and like to keep everything up to date on fluid changes etc. My rear end has richmond 4.10's in it that whine a bit, I'm not worried about reducing the whine too much, just want to do what's best for the car.

I bought two quarts of royal purple 75w-90 and I'm not sure on which cover gasket to purchase, and if I should use the additive or not, and if so should I use GM or Ford?

Thanks!

killagt

iTrader: (3)

With rp u do not require the lsd addictive. but I think your rear end require running regular non syn 80w90 with lsd addictive. I alway use felpro gasket for 10 bolt, with tiny of black rtv on each side of gasket,

AlamoTA

iTrader: (10)

What he said! Sort of

01ssreda4

iTrader: (96)

Yep

Randal McSandal

iTrader: (3)

So... I should return the Royal Purple, and pick up some non synthetic blend 80w90 and a bottle of additive from GM, along with a felpro gasket and add some black rtv to it?

f-body.cbct

iTrader: (5)

Fwiw, I just picked up 2 quarts of mobile1 75w90, one tube of GM additive, a fel-pro gasket and some high temp rtv..

skopers3

iTrader: (3)

So you put RTV on each side of the gasket? quite a bit or just a thin bead?

Randal McSandal

iTrader: (3)

I'm going to go with a thin bead, as some people don't use RTV at all.

f-body.cbct

iTrader: (5)

Same here.

senicalj4579

iTrader: (41)

I dont use any calk when doing the gasket. Never had a problem on 3 ls1 cars w/ 10 bolt.
RP comes with additive in it huh? I used to just get some other gear oil and buy the additive separate for the 98z I had.