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      11-20-2020, 07:23 AM   #23
Luftpost
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Drives: 2016 650 GC, E39’s, X70, X1
Join Date: Feb 2018
Location: JAX

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Quote:
Originally Posted by Alpine650 View Post
I wish we could figure out the cause? I thought it was left over soap after car wash but that should be easy to get out.
My bet: Chemical reaction between the two different surfaces/materials. The catalyst being H2O.

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