Quote:
Originally Posted by Tari
Changing tranny fluid has caused many BMWs to have tranny failures. I'd leave it alone if I was you since its lifetime.
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This is because most people only get around to changing the "lifetime" fluid after they've started to notice transmission problems already. It's already on it's last legs and then when it lets go people like to blame the fluid change.
A full pan drop and filter replacement should be part of everyone's maintenance routine. Don't wait too long.