...an update from my earlier post to this thread on 7/9...
My E90 6MT is at the dealer today to have my diff fluid replaced with "83 22 2 282 583" (SAF-XJ + FM booster)...confirmed by the Service Foreman during drop off - I'm loving life in a Chevy Cobalt loaner for the day.
When I dropped my car off this morning I was able to get a copy of the invoice from my previous 1,200 mile service visit, so I was finally able to take a look at the print-out to see what diff fluid they put in. In my previous post, I wrote that while on the phone with the service advisor he had told me they used BMW Part Number "83 22 0 002 94"...I can now see that this number was missing a preceding zero in the last two numbers - the invoice actually says "83 22 0 002 094". The line item on the invoice print-out reads as follows: "QTY 6 - 83 22 0 002 094 - 1/2 LTR DIFF OIL". I suppose this means they put in six half-liter bottles of the 094 fluid (3 liters in total)?
While searching I found another post in May from a guy named "mattwhite" who also had this 094 fluid, but no one seemed to know what the fluid was in his thread either:
http://www.m3post.com/forums/showthread.php?p=2813831
I also came across this recent thread, but don't know how valid it is because it is from 2004 and refers to the 094 fluid as a European Castrol SAF-XO (non-LS) dealership fluid...and I'm in Massachusetts (with LSD):
http://www.bimmerfest.com/forums/arc...p/t-54836.html
This leads me to believe that rmashman is right that my dealer put in a standard 3-series non-LSD fluid...but the only problem is that the 094 part number does not match up to the one rmashman listed (83 22 9 407 768) - Does anyone know for sure what the "83 22 0 002 094" fluid is?
I still don't understand why they wouldn't have simply used one of the two standard fluids we're seeing from other M3 owners in the poll..."83 22 2 282 583" (SAF-XJ + FM booster) or "83 22 1 470 080L" (SAF-XJ)
I'll post back with results of 43 MPH diff whine and right-cornering diff chatter/grind when I get the chance to road test after picking it up.