Quote:
Originally Posted by tzhu07
I image searched "rail dust", and those spots look nothing like what's on my car. I'm pretty sure it's something else.
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Right. Assuming your car was bought new in WA, it was discharged from a ship in Portland and trucked to Seattle so has never been on a train.
I'm guessing tree sap that most car washes won't touch. If so, it'll take a good quality fine polish and random orbital buffer for the best outcome or a gentle claybar treatment followed by protective wax.