E46Fanatics - View Single Post - Changing diff fluid. Oem or not?
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Old 01-23-2013, 12:47 PM   #27
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Join Date: Dec 2012
Location: San Diego
Posts: 44
My Ride: 2002 BMW M3
i apologize for bumping such an old thread.. but has anyone tried the Redline Limited Slip Friction Modifier?? If so, any thoughts or reviews about it?
I recently changed my diff fluid with RL 75W-140 and i started hearing the whine. My shop recommended this:
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