I found them all over my brother's white 08 vette. I got them out with the mother's clay bar kit (with the 2 80g bars). I'm guessing it is a less aggressive clay being a consumer grade product.
It did take quite a few passes over each spot to remove it all. Keep in mind, the iron particles had nearly two years to oxidize to this point, so it may not have been the easiest job for any clay bar.
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2012 Mercedes C63 AMG P31 Sedan, ROW, aFe, Eurocharged Dyno Tune. 438WHP/415WTQ
2010 SOLD: 40th Anniversary 370z
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