Hey folks, If your thinking about cleaning or shining your trailer I have found a metal polish that really works. I picked some up at a truck stop in oregon after seeing a demonstration that impressed me. It turned out to be the best polish i have ever tried and they claimed that it would last about 6 to 8 months of daily driving witch is better than the 2 months that every other polish seemed to last that i have tried. They have a web sight at www.crystalimagesllc.com and its called Pro Polish Plus. Shining up a trailer is a big job and this made it a lot easier for me and it did a great job. Good Luck