Stiles, I doubt that ice had anything to do with it. We haven't been in a freezing situation for a month and the local temp was and is around 70. This trip was only 60 miles and not on bumpy roads. This was the first trip that I ran with anything in the tanks, I always dump everything before we hit the road. I was just doing a scrub job on the black tank with ice. I have done this many times before on this rig and our other one and never had a problem. The only thing different this time was that I had a much fuller tank. That obviously wont happen again. Of course it is pouring outside today and everything that was in the basement is sitting under the awning getting damp
... Dave and Betsy