Thread: oil on MAF
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      01-31-2013, 06:28 PM   #1
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Drives: 2009 montego blue 335i xdrive
Join Date: Apr 2012
Location: new jersey

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oil on MAF

i decided to clean my mass air flow sensor today cause my gas mileage been crappy. so when i took it out it was covered with oil. and i didnt have any engine light malfunction or anything. what could cause this.
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