| You had them install a transfer case because the expansion tank blew up?
Mango's advice is a little extremist but the fact that those parts should be replaced is still there. When you replace them is up to you.
FWIW, Honda recommends you replace their water pump at 105k miles, why should your BMW be any different?
Last edited by SamDoe1; 02-13-2013 at 11:57 AM.