Depends on your what your interior is...mine is the plastic coated aluminum sheets. If that is the case a very thorough cleaning and a coat of the Futura will do an excellent job. A large part of the stickiness on these is caused by the plasticizers coming to the surface. FWIW I cleaned the interior surfaces in mine with Marine Clean from POR-15. I cut it around 10:1 with hot water.
Aaron
