I just had a large 1969 Mach I style satin black stripe painted on the hood of my car. The body shop used 2-stage PPG paint with a satin black base coat and satin clear coat. From what I understand the satin black finish can't be waxed or buffed or it will lose the satin look and become glossy. What is the best way to clean and protect the satin black finish? Can I do anything besides regular washing? I appreciate any help you can provide!