Quote:
Originally Posted by Max Gunner
What has changed about the transmissions or fluid in them that makes them not benefit from any fluid change at all versus the not-so-distant past when BMW recommended ATF changes as frequently as every 15,000 miles?
MG
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I have no idea, but fluid can cost up to 25 bucks a liter and I can get Dex 1 or 11 for a couple bucks at the local autoparts store. so thats different. The old 3hp and 4hp transmissions were great but hardly the level of a modern trans. We use to change oil ever 3 k too and thats long gone. change it if you want, but there is nothing that indicated it does anything but empty your wallet. I would challenge anyone to produce data that shows a benefit in frequent changes for late model BMWs.