That brings up a good question, what is the proper charging voltage for the bosch regulator ? Used to be only GM went up to 14.7 or so with their labyrinth vented battery and imports where 13.8. Drove me nuts back in the day because a normal lead acid battery will start to boil above 14.2 !

__________________
1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)