It's a fantastic polish that not everyone gets on with on paintwork, as it can be a bugger to remove if you leave it on for too long, or spread it on too thickly. But for metal... well I have used it since I polished my trims and they are still spotless
Google it, and have a look on detailing world. The first time I used it on my dark blue TR6 I couldn't believe how brilliant the paintwork came up, but subsequently, I did apply too thickly and got p***ed off with it about a year ago - my fault.
Anyway, now I have the S8 and it's problematic trim, I decided to give it another go!
http://www.pistonheads.co.uk/gassing...=0&f=&t=438920 Thread that inspired me all that time ago to buy it.
HTH