thanks for information guys I am going to give it a try on a set of chrome wheels that are really caked with tar and oxidation. I will try and upload some pictures when I have a minute.
Just make sure that the wheels are definately chrome, and not polished aluminum with a clear coat.
How does it work on glass? Do you use really light pressure when cleaning? I would be kinda worried about it scuffing the glass, but I guess not with the really fine grade stuff...ya i have heard that the german dealerships used 0000 to clean glass. i have used it with a nice foaming glass cleaner and scrubbed lightly to take off stubborn window chalk like the whole "go team go" bit that soccer moms have on their cars.