I'm not sure what HEET has in it, but maybe.
Air line Antifreeze is what the over the road trucks use in their air systems to prevent them from freezing. You can get it at truck stops, or truck parts stores that deals with those. I buy a gallon of Distilled Water from wal mart, and then mix it myself so that I know the mixture.

I've found out that the more potent you make it, the bigger the nozzle you will need. When I get the chance I'm gonna have to move up to the M7 nozzle to feed my beast.