first I park the car to let it cold down for 20 min then I put the spray on the wheel used the brush to scup it and let it sit for a minute while I when I put money on the machine came back and power wash it and then I did the same thing to the other ones came back to the first wheel and saw that it was turning kind of fuggy then I started to see white spot coming out and check the other ones and the same thing happen I try and wash them again put more spray and it did not work I wipe the off put some detail spray on it and it dint work either.