Originally Posted by Trsnrtr

I use a similar method when I have a flat in sub-freezing temps. The first thing that I do after stopping is stick a cartridge down my tights - no kidding. Then, when I'm ready to air the tire up, out comes the cart, screw it on the inflator and I've got a full tube in a couple of seconds. I've changed several flats in sub-freezing temps using CO2 without a problem.