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Does opening the oil fill cap make the noise go away? If you had an OFHG leak, it could actually be your serpentine belt being degraded and squealing.
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2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets
ISTA VM Setup/Tutorial
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