sti rear diff fluid
 

what fluid is best for the sti's rear diff? i was going to put 75w90 mobil 1 in it but i dont know much of the internal clutches w/ that diff and if it needs friction.
thanks

I know this is an ongoing opinion issue, but I wouldn't use Syn. in the rear diff. I would use regular 75w90 gear oil. Just my two cents. I figure what came from the manufacture can't be a bad idea.

Subaru LSD Oil, p/n K0305Y0900

is the sti rear diff lsd?

do the front and center differentials in the sti 6spd get lubed by the gear oil from the trans or are they seperate?

yes, it uses the same oil.

75w-90 for the tranny and Subaru LSD Oil for the rear diff ;)

How many cans of K0305Y0900 does it take to fill the whole thing?