I read somewhere on the site that over a period of time repeat cleaning of a cae with wfp will damage the paintwork.
I don't know how many cleans that equates to 'cause I've cleaned my van and the wifes rather nice soft top car ........... her pride and joy ........... with nothing but wfp since I bought it three years ago and there's no sign of damage as yet. Could that be famous last words
The car and van come up lovely; BUT I never clean the wheels with it as I reckon that would just mess up my brush.