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Old 04-25-2012, 05:35 PM   #17
EX E30 M3 Owner
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Join Date: Mar 2005
Location: North York
Posts: 2,504
I agree... WD40 should only be used to break down dried rustproofing or crusty stock on dirt ! Thats why I used it.

For all other engine cleaning, any engine spray or All purpose cleaner diluted with water would work fine.

BTW, 5ABIVT your engine bay was only dusty.. nowhere near as bad as mine was !
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