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      05-23-2012, 04:57 PM   #6
DB
e90m3/e92 335xi
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Drives: e90 m3
Join Date: Mar 2010
Location: Philly

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Cars can handle some direct spray in the engine bay with no problem. I've treated all of my cars the same with no problems: just cover the air intake and then wash. Here is a pretty good guide: http://www.detailedimage.com/Auto-De...de/Engine-Bay/