Meguiar's One Step Compound Marine and RV. If the oxidation is really bad you may want to use Meguiar's Oxidation Remover followed by the polishing compound. This is what our RV tech uses.
2011 Bighorn 3055RL, 2011 F350 DRW 6.7L 4x4 Diesel Lariat and Hensley TrailerSaver BD3, 1992 Jeep ZJ and 1978 Coleman Concord Pop-Up for remote camping
Dave & Renee plus (Champ, Molly, Paris, Missy, and Maggie in spirit), Mica, Mabel, and Melton