Hi all,
My car is covered in what I think is rail dust. My camera doesn't pick it up but looks like this

I tried Meguiar's Quik Clay Kit but no matter how much pressure I used none of it would come off.
What should I try now? Meguiar's Ultimate Compound?
I drive a white 1996 Mitsubishi FTO GPX.
Thanks.
My car is covered in what I think is rail dust. My camera doesn't pick it up but looks like this

I tried Meguiar's Quik Clay Kit but no matter how much pressure I used none of it would come off.
What should I try now? Meguiar's Ultimate Compound?
I drive a white 1996 Mitsubishi FTO GPX.
Thanks.
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