Revvdmedia
1000 Posts Club!
Rail dust. I figured thats what you meant. I had a white Lexus that I used to park next to a railway at work. The car was covered with those damn rust specs.
I used something called Iron X to get rid of it. Stinks like crazy but does a great job.
I did the full array. Dawn wash to strip whatever junk the dealer put on the car, iron x, clay, polish. I topped it with meguiars fast finish. I normally use Carpro Cquartz but it has been constantly cold, below the working temp for what I have on my shelf (TiO2, not UK version).