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      06-22-2012, 10:19 AM   #36
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Drives: 2011 E92 M3
Join Date: Feb 2009
Location: One of the coasts...

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2011 BMW M3  [5.00]
Using a QD spray is better than no spray at all. It's just as dangerous to the paint as washing is. Let's face it, no one is absolutely perfect when washing their car. Both washing and using a QD spray has the chance of leaving some light marring on the paint.

The QD acts the same as a lube and lifts dirt. It's better than nothing, and perfectly acceptable as an in-between wash type thing.
'11 BMW E92 ///M3 - ZCP and DCT
'15 Ford F-250 - Lariat, 6.7 Powerstroke Turbo-diesel