Best polish for gel cap and sides of 5th Wheel

I ended up going with a sealer made by ZEP which is the floor polish, and, boy, am I glad I did! What a great result. My 5th wheel now looks brand-new and it was truly worth the effort. Since we've never waxed, no stripping needed and decided the sealer was the way to go.
FWIW, Zep floor polisher is sold at Home Depo for around 25 bucks and after 4 coats I didn't even use half of th jug.
Thanks, all, for the advise. This a great resource.