Here is a frinds BLACK Grand Prix GT with swirls and small scratches. I use a PC (Prter Cable 7424 Dual action polisher) and 1Z Paint Polish using the orange Pad, then followed with the green pad. Then after working the polish in (about 3 minutes on each panal) I swithced to the blue pad and 1Z Metallic polish(You can use it on non metallic poaint also like the Grand Prix was not metallic paint). I polished each of the panals for 2 minutes. Thats it. The following pictures have NO wax or sealant on the paint. It's just polished!
Products.
PC
1Z Paint Polish (Green can)
1Z Metallic polish{Red Can)
Sonus Pad Kit
Sonus Micro fiber Buffing towels
Click on my sig for the products used.
Jon