When valeting customers motorhomes I firmly believe in using products that are formulated for what I am using it for. I have heard tell of people using Brasso for polishing their motorhome windows . Personally I use a compound that is specifically formulated for acrylic windows. What people must remember is that motorhome and caravan paint is very thin, it doesn't have a laquer coat like most cars, so if you use the wrong product you may well end up polishing through the paint