Daft but yes, comes in handy sometimes if not realistic.
There is the "milk cow" mod so you can refuel before going back to base but you have to come out of the game and restart on the next mission which is daft too??? For example if you are on patrol one and decide to stop at one of these refuel points it starts you off again at patrol 2, so you can't continue patrol one anyway, which doesn't make a lot of sense to me, but there you go, glitch in the game apparently?. Six and two threes which you use really, they have the same outcome.