My '97 Aerbus was very oxidized when I bought it a year ago. I did a ton of research and decided to put the Zep on the Fiberglas roof and Poli glow on the Fiberglas sides. I scribbled the roof with oxyclean about 4 times using a brush and then power washed it. It really came out sparkling white. I then used a short nap paint roller and pole to roll on about 4 coats of the Zep high traffic floor wax. Very thin coats and time to dry in between coats. I scribbled the sides about 5 times and chose to use the Poli glo on that. It's been a year and still looks like new. I have received a ton of compliments on how new the motorhome looks. I don't get much in the way of white streaks from the roof after using the Zep. I'll probably refresh it this spring.
'74 F350 44K,'79 11' Mitchell Camper, MINT All Original
'79 Mitchell 25' Class C, 460 46K, MINT All Original
'97 Rexhall Aerbus, 60K, 460, F53, MINT All Original