morning , question of the day ,,, vinnie our 36 ft winnie vista is just screaming let me out . okay its me but lets go with with it . after sitting for 4 months she has become quite dirty . its going ...
I also just use the same car wash soap used on rest of camper and truck. I caution you NOT to use dish soap such as Dawn. Though it is a great cleaner, it will remove the wax on the sides of the camper/RV as spills over.
If you are going to wax the whole unit anyways, then I guess it would be fine to use dish soap etc.