My 07 MH the graphics were starting to show there age, no cracks or chips just some fading. I looked into a lot of products talked about in different forums. I finally picked a product by McKees 37 the Vinyl Decal and Graphic restorer was my pick.
https://www.mckees37.com/rv-vinyl-decal-graphic-restorer.html
I did two applications and the graphics look great for there age. Its been over a month since doing and have no complaints.