Quote:
Originally Posted by Humid Hummus
Why? you're supposed to keep filling the transmission until fluid dribbled out the filler hole. that's how you know the transmission level is full.
the amount of fluid that will come out of the transmission will be varied depending on how warm the transmission is when you drain the fluid.
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Yeah, that's what the manual/ISTA says, but based on my last 3 ATF changes on a 335i and X3 35i, my experience is that you'll end up draining more fluid out than putting back in if you use that method.