shaun

hey guys im droping off my car for a ta install and i might have the rear end oil changed and im wondering what diff i have.
if the rear of the car is in the air and in neutral the wheels both spin the same way. i read a thread a wile ago but i cant find it now and it said that if both wheels spin the same way i have a certain diff and if the wheels spin oposite then its a certain kind of diff.
i need to know what gear oil to buy and if i need the additive or get royal purple or what.
thanks in advance guys

35th SS

iTrader: (2)

both wheels spin same direction.posi rear.you have a torsen since its an a4.m6 I believe uses the auburn rear.someone else chime in if I have it opposite.

shaun

any one?