I'm using the OE BMW fluid while under warranty.
Has anyone used redline or something else in the rear diff? I would imagine that the Redline 75w-140 would work fine.
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2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
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