Rear Gear oil
 

What Weight is the Best to use for a Limited slip? 90W?

I allways use 75w-90

90w is what the dealer uses

Dont forget to get some Posi addative.

80-90w and yes, posi additive.

Ill be doin that this weekend.

posi additive? whats the purpose of that if i have a Limited slip?

it keeps the clutches from burning up (posi is limited slip it's actually a name brand ford used)

well, I meant One tire Fire.. Some Times Posi..

if you have limited slip you need additive, if you have an open rear (aka you leave one black mark) you don't need it

80-90 is what almost all cars take unless its synthetic and everyone is right about additives. dont forget about those