ART - When we had "The Storm of the Century" three years ago, storm hit Friday nite, wind came up Saturday morning and blew it all around all day, so Sunday afternoon I go out in the shop to fire up #1 Snow Mover, walk in the side door of the shop and think, "Something doesn't look quite right... OH %$@$& the thing is listing to Starboard!" Right rear tire was flat, but there was supposed to be 50 gal of CaCl in the tire and there was maybe a tablespoon full of fluid on the shop floor. There was so much "gluck" in the water stem from 40+ yrs of fluid that it wouldn't even take any air at 125+ PSI, I had to remove the valve core and drill out the water stem, then replace the core, air the tire up, no hissing from it so I thought O-K, pushed snow for an hour & a half, tire still not low. Week late tire was still up, 2-3 days later tire was flat. Turned out a 50+ yr old patch on the inner tube had chaffed against the rim and worn thin and was leaking. That tractor got the rims removed, tires bumped off, rims sand blasted, primed & painted, tires and new inner tubes installed that summer.