I have just gone out to my van and we went out for the afternoon. I wanted a cuppa so turned on ONE of the pair of 13kgs gasit bottles. the gauge just turned a bit to the nearly empty pressure bit. We were full when we went to Lincoln Show then a day up to Yorkshire to pick up my friend near Huddersfield and back home, four days and nights only. We did have the heating on at the showground but I do not remember it actually coming on for more that half an hour at any time as the van is well insulated and we were cosy without it. The fridge was on all the time we were parked but that was all we had going. How long SHOULD the 13kg bottle keep the fridge alive??? I would worry if I was unable to get a gas refill sometime and actually run out. Everything is New so not a matter of worn jets etc.