I hauled a load of used auto parts that I had no idea were leaking oil all over the floor of my trailer until I delivered, no wonder it paid so good! I was told it was used alternators, I don't know too many alternators that are oil cooled so there must have been some other stuff in there! Anyway, now I am left with some big oil stains. Any ideas on how to clean them? Should I treat it like a deck and just power wash it? Any ideas would be greatly appreciated!