The correct liquid will not freeze. I have been using RV anti-freeze in 2 of my trucks for about 4 years now, though the Bounder is balanced with weights. It works great too!!. I live in central Ny & have never had any issue with it. The great thing, when I go 4 wheeling or I get in the deep snow and the wheels get snow or mud packed in, they still self balance. I would highly recommend it!! The biggest catch with it is you have to use enough fluid or it wont be able to self balance at all speeds/conditions. I have an Isuzu Amigo that has 245/75-16s & an Isuzu Vehicross that has 255/75-18s and I use about 20oz. in each tire.