Just got new 5er, previous one had decal disease and was a source of displeasure for DW. Have checked previous posts on care of decals but they were older. Older posts seemed to suggest 303 protecti...
I wish that I could tell you of a great product to use one your decals but IMO decals will self destruct in 5 to 10 years. The best way to extend there life is to keep them out of the sun and that is not easy with a RV.