The best wax for your RV is the one that suits your needs. If you want something that lasts for longer than a few days, then you should choose a high-quality brand like Meguiar's or Turtle Wax. If you just want something cheap and easy to apply, then try some off-brand stuff from your local auto parts store. There are many different waxes and polishes available for use on RVs, but we recommend using Meguiar's Ultimate Wax or Collinite 845 Marine Paste Wax to protect your RV's paint job and give it that extra shine.