In the past, weve had cars painted with all the bodywork in the condition shown. Bad idea--all the sanded edges show through, and as Gonzalez proved, theres a lot more smoothing to be done. After hitting the entire car with 180--grit on a dual--action sander, the Camino got its first of four coats of PPGs NCP 280 gray primer surfacer mixed with NCX 285 hardener. These are low--VOC, California--legal materials. Just before the primer, every spot of bare metal was sanded to eliminate even the lightest beginnings of surface rust, then the car was wiped thoroughly with PPG Wax and Grease Remover and lint--free towels.