I use Wash Wax All this is an aero space product, for cleaning planes. This product does not use water and cleans and waxes in one application, simply spray on and wipe off using the Micro cloth products provided in the kit. I have use this on my fifth wheel three times now and each time it gets easier to wash and clean in fact the bugs will wash off in the rain. Best cleaning product I have ever used.
Do a search on this site for others that are using it and see what they say.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67