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      03-01-2013, 03:18 PM   #6
Fen335i's Avatar
Drives: e92 M3 / Z4 M Roadster
Join Date: Jun 2008
Location: Pacific Northwest

Posts: 783
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I used the OEM diff fluid w/FM booster as well on my last change. My goodness it's expensive...I might try an aftermarket high-end fluid next time. The OEM stuff is highway robbery...kind of like the 10-60 TWS oil! At least now Redline is making 10-60 now that is slightly cheaper.
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