I've been very happy with Motul XCESS 5w40. Quieted down the motor at idle a bit, and runs a good deal cooler in the summer than 30 OE. Not brutally expensive either.
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E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII
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