I just had my car painted with polyurethane single stage paint and some dirt got in it. Do you think i can get it out with a Zaino Clay bar? I would hate to have to wet sand the car then buff it. Any help is welcome.
That would be good to know. Also clay will take anything that is on the surface however if its dirt I would be concerned about the dirt collecting it the clay building up and doing worse damage to the surface
If he is willing to respray it you have nothing to lose by trying to wetsand it with 1500 -2000 grit paper and then buffing it out. If you mess it up, let him repaint it ... who knows it might come out looking great.
On a new paint job, you can usually get away with 1000, but it will take more buffing to get rid of the sanding marks. Personally I would start with 2000 and if that isn't enough then step up to 1500 and last resort 1000.
Also, check out this info: http://www.autobodystore.com/rsw.htm