Have used British lpg in cold weather, no problem its 100% propane. French autogas is mix of propane/butane, even at 5deg C our cylinder ran out with 30% lpg left, frost on cylinder when using heater for an hour stopped remaining gas from vapourising. So do people use local propane cylinder on ski aires in France, if so which cylinder is most available? The 6kg le cube looks good but what is availability up high? Or do you take enough British lpg with you, we only carry 20kg, maybe only enough for 7-10 days if really chilly. Would appreciate your experience, thanks.