it can vary greatly throughout the year from 30-50p a litre
used to be cheaper in the summer, so bulk buy with enough to get you through the winter.
easier said than done, so timing is crucial
it'll take a bit of getting used too working it out
obviously the bigger tank you have the better
my mate's tank is buried in his garden (he's got a monthly direct debit scheme) and every month or so when the wagon is passing they stop and top it up
he obviously gets so many litres a year for his money, fixed price spread over the 12 months
only problem he's had is when it was VERY cold recently a valve broke on the tank and he lost nearly all his fuel
might be an insurance scheme to cover this
his tank wasn't bunded which would have saved most if not all his fuel :roll: