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Old 12-07-2018, 01:26 PM   #9
fatdazza
OCD Sufferer (Obsessive Car Detailer)
 
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As other have said, pre wash or foam is there to wash as much dirt off as possible before you touch the paint with your mitt.

So, pre wash or foam, rinse off the dirt that has been shifted (ideally with pressure washer) and only then touch the paint with your mitt.

You are currently rubbing all that dirt into your paint.
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