Cleaning a "stain" on Ceramic/PPF-protected car
After a wash, I found a 3-inch stain/blemish on my tailgate. I have Ceramic Pro over Expel, and it looks as if the there was a spill/sap on unprotected paint.
I tried both Adams detail spray and CeramicPro's cleaning spray, and the discoloration is still there.
Any ideas, or am I down to having to remove and replace the PPF.
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