Originally Posted by superduty5.9

Couldn't you use water with an additive to help with rust and freezing. One tire holds what 7 or 8 gallons x2 x$3.00 a gallon. Sounds like a little under $100 to me. I read somewhere but never tried it, adding 8oz of Dawn dish-washing (about $3.00) liquid per tire and the rest with good ol H2O and somehow the Dawn prevented rust and freezing. I want to try that this year just to see if it works or not.