If I remember correctly, tanks need to be empty to be removed, so you couldn’t actually do that without unfreezing the water first. Maybe, by driving near a lava fissure?
Regardless, insulation works both ways: Hot stuff stays hot, cold stuff stays cold, frozen stuff stays frozen. Effectiveness of insulation depends on materials being selected and arranged in ways to mitigate thermal equilibrium between the internals and externals of a given container.
So, more simply, the same reason that the water is kept unfrozen in the cold would also be helping it retain its extra heat after boiling and recontaining.
Assuming thermal exchange is at least a sort of functional thing in-game, then the test case Abraham_Limpo mentioned would probably work as you hope.
Not that it would have much of a use unless gasoline or diesel had the potential to freeze… Not that New England winters could freeze gasoline in most cases. It could very well ruin diesel though. Protection for that would be good.