I know this post might be little bit old, but Iím still facing differential noise w/ my 2012 E92 M3 Coupe Mech LL S65 EUR after break in period oil change, and i have changed twice already and noise is still much noticeable when slow turning right...
1. after break in period i started noticing the noise, so take car to service and they change my oil w/ 1.5L 422520 CHG, and told me the noise will go away after 1.000 kms
2. The noise didn't go away so i took the car again to the service, they once again change my oil w/ 1.5L 422520 CHG, and was told once again the noise will go away after 1.000kms as per factory instructions.
3. A friend of mine at the concessionary friendly told me that if the noise doesnít go away this time they might change my rear differential part.; and I really donít want a repaired car because itís suppose to be brand new.
* I have try to find out about the oil you suggested (83 22 2 282 583) but Iím still waiting for the concessionary comments regards this, and i don't find any match between what the concessionary used and your suggestion, kindly if you have time give me an idea, many thanks in advance.
Originally Posted by BMWM.D.
The two are different oils. The SAF-XJ is the standard oil we install during all 1200 mile services. We carry it in a 55 gallon drum. I verified all part numbers before performing my own 1200 mile service. I just wanted to be certain we were using the correct oil. This is the standard oil listed by BMW in the "operating fluids" section of BMW's technical information. This oil is also available as a 1 litre bottle, part# 83 22 1 467 993.
The "specially formulated differential oil" (83 22 2 282 583) is the fluid listed in the Service Bulletin to use when the regular SAF-XJ oil results in excessive clutch noise. I know this because I have performed this bulletin on several cars. This oil contains additional friction modifiers to reduce noise.
Although I know they are different oils, I can provide you with one particular incident that stands out in my mind. I have an E90 M3 customer that asks for me to personally work on his car whenever he needs service. I performed the run-in service on his car right around 1000 miles, using the SAF-XJ oil in the 55 gallon drum. A few weeks later, he comes in to talk to me about a loud rubbing noise he is hearing while turning into his driveway. I tell him it is most likely the clutch pack in the rear diff. After a test drive, it is certainly the differential, and it was LOUD. I drained the SAF-XJ oil and filled the diff with the special #583 oil. A quick road test later and the noise was completely gone. This is enough to prove to me that these are different oils.
I could be completely wrong, but having first hand experience with this stuff for years, I really don't think so. I am not trying to be argumentative; I just want people to be getting the most accurate info.