Ok so I've been experimenting today on the 500.
My car cleaning experience to date hasn't been with anything more specialist than products from Autoglym, Zymol and Meguiars.
First of all the Foam Gun and the Snow Foam. Not good is all I can say. I had the gun on level 5 which should have given the strongest concentration. The instructions do say that If your Water Pressure is Low or you live in a Hard water area you might need tohave a stronger solution in the bottle (We live in limescaleville) So when I come to do the RCZ tomorrow I will have to put an awful lot more snow foam into the bottle, because today it was more like soapy washing up liquid and it was on the floor in a matter of seconds.
1/10
Moving onto the Auto Finesse Wheel Cleaner, that did fair a lot better than the gun and foam, but I can't say I was blown away by it. I've always been used to wheel cleaners that foam up when they come out of the trigger. The Auto Finesse product was a fine mist and I can see why they say use liberally. It certainly needed a brush to agitate the product and when I did that rather than using a wheel mitt the results weren't bad. It probably didn't help that it had been a fair few weeks since it was cleaned by the local Afghani boys and that the wheels are black. I'll see how it fairs tomorrow when I do the RCZ as there isn't really much of a build up of dirt.
5/10