Quote Originally Posted by winfred
nothing much to really see, auto trannys don't really make sludge unless they get water in them and then it's kinda like a cross between pepto bismol and cottage cheese, about all you see is the bits of clutch in the pan
bummer, i once had a massive argument with a dude about the nature of lifetime fluid. he was one of the "bmw knows better than you" kinds of people.

personally i would change it every 100 000 kms, I can't see any lubricant lasting longer than that without a change of filter or water seperator.
what are your thoughts/experiences on the subject?