The possibility of a bevelbox noise is its reduction, the reduced bevelbox is 2.0 cars have rear transmission reduction is 4.3 /4.8.
The first bevel box fled to 10.000km.
My bevel box N°2 reached soon 40.000km without leakage problem with 85/140 mineral.
So your M3W has more as 50.000 km on the clock. ???
