California Purple Polish preceded with their de-oxidizer...
Most truck stops have it.....and for good reason....effortless.
I had only used Flitz prior, but that takes a lot of time as you only do a small spot at a time.
http://www.californiacustom.com/purp...al_polish.html
http://www.californiacustom.com/alum...eoxidizer.html
It's no gimmick and has been around for years.
Clark