whats the best all wheel safe wheel cleaner? I'm going to be doing enough kinds of wheels soon, that I dont want to risk anything, and I know even some of the so called all wheel cleaners actuall have in fine print do not use on certain types of wheels, so what actually safe on all wheels? I have actually been using simple green diluted 3:1 and it actually works quite well, plus it's acid free. But I feel wierd about using a degreaser for wheels, when there are so many auto specific products out there, but has anybody found anything better?