I have a 1971 Schwinn Sports Tourer that needed the down tube decals replaced. Paint was nice, so I was nervous as to what to use. I found out after doing a little research online that WD-40 works. So, I applied it to a paper towel and gently rubbed it back and forth, and then rubbed it with my finger nail on top of a clean paper towel. Presto! It started to come off in small pieces, and just after a few minutes it was all off. I just cleaned it with some Windex and it was ready for the new decals.