Originally Posted By: CATERHAM
We're getting away from the main point that the TWS 10W-60 is much heavier than necessary for all street us in NA and most track use.
There have been plenty of North American S54 engine bearing failures. BMW quickly changed the oil recommendation to 10W60 for these engines and revised the bearing design half way through 2003.
http://forums.bimmerforums.com/forum/showthread.php?t=1026994&highlight=s54+bearings
We're getting away from the main point that the TWS 10W-60 is much heavier than necessary for all street us in NA and most track use.
There have been plenty of North American S54 engine bearing failures. BMW quickly changed the oil recommendation to 10W60 for these engines and revised the bearing design half way through 2003.
http://forums.bimmerforums.com/forum/showthread.php?t=1026994&highlight=s54+bearings