you can always lightly wetsand and then
you can try wetsanding and polishing. be careful not to over do it or you will need new clear coat.
On hood, I tried the aggressive red clay, then lacquer thinner, clean with window cleaner, then red clay again. This was on one spot on hood that had already been rubbed 7 times with Maguire's (megs) blue clay, buffet with megs DA micro fiber correcting compound with a extra cut micro fiber DA pads.
This picture is of the worst spot on roof. I tried to catch in a picture, it takes just the right angle to see. If I knew what it is that would help.
I've seen stuff for iron at autogeeks but I just don't know?????
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you can try wetsanding and polishing. be careful not to over do it or you will need new clear coat.