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BMW went to an ATF for its manual transmissions about 15 years ago to respond to complaints about poor shifting in cold weather. It solved that problem at some expense in lubrication qualities. Most trans rebuilders use a heavier lube, and Mike Miller (BMWCCA and Bimmer mag tech guy) recommends Redline MTL. That's what went into my E39s and it'll go in my E92 at 30K.
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