"During the period between November 2012 until 9th September 2013 an additive was combined to the bevel box oil on all M3W’s"

It would be useful if MMC was a little more precise on this. Are these installed BB on new cars, replacements BB? Can they not give either chassis numbers or reference numbers of the installed BB? Sure they must be ISO in some way and keep track of what and where they are installing. Sorry only joking innocent