Despite all the 12 bolt problems
I already drained all the excess oil.
Ok thanks. so why the hell should I get it out? ( Im still gonna drain it, but Just curious)
Most any aftermarket posi maker recommends standard gear oil..so who are we to argue. And from multiple searches here and on other boards, members with far more experience in rear differentials (than I) repeatedly recommend to stay away from synthetics in rears. Do a search on chicane, he has some interesting points about it.

