I had a requested yesterday for something I've never ventured into. Acid wash 2 48ft trailers and 2 28ft. I've been doing some reading up on it and I'm not to sure about it. It seems like it's not that hard of a process but I was just wondering how well it would clean these trailers up. They're in pretty bad shape. The company just wants them cleaned up so they can go to auction. Anyone have any tips they can give me? (other than using the search button, I've done that!) Will an acid wash do these trailers any justice?