I used Auto Tek adhesive remover. If you follow the directions including temperature advisory it works better than anything I used to remove the glue. My film came off pretty easy in long sheets, but the adhesive was tough. I did pull some of the paint off on lower bumper when sheet came off. Going in for front end paint after Labor Day . More work than I expected. Good luck.
Tom and Gloria
2007 Itasca Suncruiser 35A, TOAD: 2015 GMC Canyon, Blue Ox Towbar, Baseplate and SMI Stay N Play