Wash N Wax is a pH balanced liquid soap with wax that produces a dense foam.  Try it with your pressure washer and a foamer.  Dry your car after washing it with a synthetic drying cloth. This wash sticks in places that are hard to reach on your RV, Truck and even on airplanes.  Wash N Wax is pH balanced and rinses off easily. Special polymer surfactants greatly reduce surface tension with a hydrophilic effect to safely encapsulate and flush away dirt and grime.