If your exterior doesn’t have any oxidation (still has factory shine) I really recommend Wash-Wax-All. Easy to apply and wipe off, creates a good shine and protects for a long time. I also highly recommend Bugs-n-All, a cleaner great for black streaks, bugs, grime in the corners, black stuff on the caulk, and more. This stuff seems to clean just about anything, with minimal effort. I cleaned my whole rig (excluding roof) with these two products and no water. (Takes time, but easy work!) have a good supply of microfiber cloths to keep cycling through so you clean, wax and dry effectively.
Do the roof first, we just use Dawn dishwashing detergent and a long-handled car wash brush.
Sent from my iPhone using Tapatalk