I think I have seen this product pop up in a few threads, but wanted to let everyone know a little more about it. The Meguiar's Boat/RV Cleaner Wax did a wonderful job on my camper. I had some pretty bad black streaks on the front and some minor oxidation on the sides. Using the Mequiar's and a few small hand buffing pads, I was able to rid all of the black streaks, as well as the oxidation. It cleaned up my awning pretty good as well.
The wax cleans, polishes, and protects, all in a one step process. It has a non-abrasive formula, so it is not hard on the paint. I was even able to use it on the plastic trim pieces to help bring back their shine and color.
You can pick it up on Amazon for around $20 for a 32oz bottle. When I applied this to my camper, it was sunny, with a temperature around 45 degrees. Not certain how well it goes on and comes off with warmer temperatures as I have not yet tried using it while it was warmer out.
Link To Meguiars Boat RV Cleaner Wax