The Sun is hard on RV finishes, well just on plastics and fiberglass...Our 2011 Montana is used on the road, but we keep it at a Campground to use and is used as our storage..We wash it about 6 times a year and give it a buffer waxing once a year..Doing this keeps it nice and bright, but the front nose cowl oxidizes fast and must be the way its made..So to clean it up takes us a good day working together.(my wife and I) Our bodies are done taking turns using the Buffer.Start with the wash, Compound(white/machine), Marine oxidized cleaner wax, and if still have our arms a good polish..Its all a labor of love when you look at the RV 2 spots down, its so oxidized that if you touch it the white chalky finish comes off on your hands- come on wash that thing, at least have some pride of your RV.