I have a white powder coated wheel. I have tried sealants and coatings. What happens is the brake dust (esp on the fronts) turn the color a light rust type color. I use a dilluted Optimum Power Clean and it cleans it off, but is there anything else I could do? I have used sealants, coatings, toppers with Hydro, but it is still the same result. Are any of the protectants targeted for wheel use any better? Thanks!