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      05-08-2014, 09:26 PM   #31
LXXV
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Drives: 2007 E91 328xi
Join Date: May 2011
Location: CO

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Thanks for many good suggestions. What just worked best for me was a combination of brillo pads, brass brush, water, simple green, engine cleaner, flat top stove cleaner, and some elbow grease. Probably six years of carbon build-up on our Acura RDX.