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      02-11-2013, 03:04 PM   #4
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Drives: 10' M3
Join Date: Jan 2009
Location: San Diego,CA

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2010 BMW M3  [4.50]
1999 BMW M3  [0.00]
Originally Posted by THE TECH View Post
I would shy away from anything but a wash especially when it comes to the rear bumpers since many of those contaminants are likely from the engine/exhaust.
Nailed it. It's funny cause detail sprays advertise as something to be used between washes to basically keep the car looking its best but you will definitely introduce swirls into the paint. Use it after a wash as a drying aid and to add some gloss and slickness as well
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