Welcome to AGO. I have had good experiences with Klasse but there are some other members that have way more knowledge with it, I will let them answer for you. Might want to let people know what kind of surface your RV has painted fiberglass, painted metal, or vinyl.
It is a painted fiberglass shell with a more porous front nose piece above the 5th wheel attachment. It also has vinyl decals.
Hope this info helps. Thanks for any help.
Never used klasse but when working on pourous surfaces the wax or sealant dries into it making it hard to remove.on pourous surfaces I tend to use a spray liquid sealant like reload.painted fiber is no promblem applying anything to it.This is one of the reasons I tend to stay away from oxidized faded boats,yes it buffs out nice but deosnt accept wax or sealants dulls it back out again.I talked to a well known boat detailer here in town that grosses over 400k a year,they machine buff and that's it no topcoat or lsp.