Just a question I have red currently being used in my caravan if needed to be can I use and swap for blue as well it's just that I have a few spare full bottle's of blue 7kg
Sat doing nothing .from previous caravan's that I have owned over the years .
for those new to (or considering) refillables like Safefill or Gaslow, be assured that the LPG pumps dispense gas that is (AFAIK) predominantly propane, so no issues with winter use
Surely the solution for the op, is if the value of the butane gas is more than the cost of a pig tail Buy a pig tail and use the gas in the summer when there is little risk of problems.
borderman239
Caravanner