Does anyone have experience with P21S wheel cleaner, not the gel form? I know it is water based and very safe. Just curious on the results people have achieved with it and any comparisons to other products.
It is pretty good stuff. Like any other product, if the wheels you are dealing with are in rough shape, it will require some agitation with a brush or mitt to get all the stuff off.
To be honest, of the two, I prefer the P21 Wheel Gel a bit better.