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Old 03-11-2008, 03:04 AM   #7 (permalink)
Join Date: Feb 2008
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What about a RWD car with a separate differential case? BMW recommends ATF for my 5 speed manual gear box and 80w90 for the differential. Would it be crazy to try running synthetic ATF in the differential and the gearbox? In most FWD cars the ATF or transmission fluid lubricates both the gears and the differential. Thoughts?

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