[rodneym]

I think philminotti means more than a clean.
I'd definately give the K's a call.
I believe it involves a course round of sandpaper, like 120 grit or so.
The brush scratches very easy, so it would need a refresher every few years if you want it to look that way.
I simply correct areas with the red 3M scuffer. After a while, it dulls and blends ok.
BIG job to do the whole car, though.