Gents, my girlfriend owns a 2005 BMW 325I automatic. She has been negligent in having the transmission fluid changed. She does not know when it was last serviced. My guess is never.
My question is whether to have the transmission flushed or just have the pan dropped and the fluid changed. The local dealer states that it should be flushed but I'm afraid that having it flushed will promote leaks that have been sealed by sludge. Thus causing new problems.
Any Bimmer owners or mechanics on the forum?
BTW the auto has 98K miles.