The Zep or Red Max Pro application of course will work on an RV that doesn't have any sign of aging but its claim to fame is on an RV that has lost the original luster of the gelcoat finish. My 2001 was becoming very hard to keep a nice shine on so I went with the Red Max Pro (Zep) application and the results were truly amazing and continue to be amazing after over two years. I did re-do the area above the windshield because it deteriorated, probably because of my over aggressive attack on bugs. Something to consider.....
