You can purchase ZEP from Home Depot. It is high gloss floor polish. It is Acrylic based, so it puts on a very hard surface. There are many opinions on if this is a good thing or not, as some have had it flake off like a clear coat. My opinion is that most put it on way too thick. Yes, putting it on thick gives a very deep looking shine, but I also feel like that is the source of many of the problems with it flaking off. I put it on my coach about 3 years ago, and only put two coats on. I have seen no issues with it anywhere on the coach. It does seal off the paint and makes it much easier to keep clean. If you want a deeper shine, I would put wax over the top of it.
'83 Revcon Prince 31' FWD FMCA F298817
502 w/Howell/GM ECM/Edelbrock MPFI,Thorley's & Magnaflows, 4L85E 4 spd, KoniFSD