An old Farmer John tanker trailer I had to pick up at a Fruehauf yard and deliver to some ranch out in the desert, When I got there I noticed the valve was leaking (dripping) and wouldn't close off completely. Damn thing had been left sitting in the back of their yard for a couple years still half full of pig fat renderings. Got the top hatch opened and it liked to knocked me out, slid off the side of the trailer and wasn't about to get back up there to close it. Drove it with it opened. Good thing I didn't get into stop and go traffic.
Phil
