Originally Posted by ///M3Joe
I just had my 1200 mile service as well today. My parts description said
20 - 83-22-9-415-961 LSD SYN Diff
20 - 83-22-0-406-582 OIL Manual
These numbers arwe completely different than those mentioned above. How come? My service was done in Canada.
Mine are the same as your's except that my tranny oil was just called OIL and my diff fluid was called POSI DIFF OIL. That should make us Canucks feel better :P
BTW my car makes the groaning noise from the rear end in low-speed tight turns like in a parking lot, so I'll assume that the above differential oil part number does not have the additive.
As long as it doesn't hurt anything, I'm not worried about it....