[georges]

Why in the world would you go camping in the mountain at -20 below in 1 ft of snow, you should of come to Florida were it is always sunny with beaches with white sand.
Anyway, I have not tried the stove to such cold, the coldest it was last week in Florida was 40 degrees and the stove worked properly. I will assume that this stove will not work well if the temperature drops below 20 degrees because it will start to gel but being under pressure of at least 25 lbs, I think it will stay fluid at 20 degrees.
Our intention is to mass fabricate those stove for Haiti where deforestation is at 98% and stop the use of charcoal.