I was just recently taking the lettering off of my trailer and was using Laquer thinner to get the left over glue residue off. Then I tried something a little less harsh and next thing I knew my white trailer was white again. I used plain ole rubbing alcohol, yup 99 cent bottle of isopropyl alcohol took all the streaks off the trailer and no elbow grease at all. I couldnt belive it.Rinsed the trailer off with the hose and I was done. Worked for me hopefully will work for you. :wink: