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      11-04-2011, 08:28 PM   #3
BimmerRob08
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Drives: 2008 M3, Space Gray
Join Date: Mar 2008
Location: KIKR (ABQ), NM

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Just the same. Polishing compounds that are not abrasive and then wax and seal. That should also take care of hard water stains too. No harsh chemicals needed as long as you don't let the bug guts/bird shit sit there for weeks.