Before someone says "This has been answered in other posts", I did do my research.
The question is what is the correct part number for the diff fluid in the F80 M3.
Real OEM states - 83-22-2-365-988, FINAL-DRIVE GEAR OIL, MSP/A SAE 75W-140
https://www.realoem.com/bmw/enUS/par...&q=83222365988
New TIS states - BMW MSP/A synthetic differential oil 83 22 9 405 462 1000 ml (Trade Unit)
https://www.newtis.info/tisv2/a/en/f...-guide/1GdD0La
what I have seen here:
83-22-2-282-583 500 ml bottle SAE 75W-140 SAF-XJ+FM
What the dealer put in:
83-22-2-357-992, 1L bottle SAE 75W-140 SAF-XJ
This post states the FM booster was only for E-90 series:
https://f80.bimmerpost.com/forums/sh....php?t=1435577
So what is correct? I know BMW changes the part number for items in different size bottles, 500ml bottle is a different PN from the 1L bottle for the same stuff, but the main point would be do we need to use the stuff with the friction modifiers (+FM)?