We got our first 13kg propane bottle today and its looks as if will fit in the front locker okay although it is slightly "fatter". Obviously a big saving over the 6kg bottle which costs £13-50 against the 13kg which costs £17-50. Although not a problem at present as the caravan is permanently on site, I was wondering if it would be safe to travel with 2 x 13 kg bottles in the front locker? The caravan is a Lunar 2004 twin axle. Also considering perhaps putting a plank in the bottom of the front locker to distribute the weight. What do you think as the 13kg bottle is a lot cheaper.