Most small general aviation airports have self serve 100 octane low lead aviation fuel available 24 hours per day. The 100 octane sounds great but I think it is measured differently so that doesn't mean it is 13 octane points higher than regular auto gas. In fact my plane would prefer 87 auto gas to the 100 low lead because it doesn't have the lead in it and is otherwise similar - except for the possibility of getting alcohol in it. Anyway, back to the self serve pumps. If you want to get aviation fuel that way you will just need to pretend you are a plane. The pump will ask you if you grounded the plane and then you swipe your card. It may ask if you want 100 low lead or jet fuel (kerosene, essentially) and whether you want a set amount or fill up. Turn on the pump, pump the gas, turn off the pump, get your receipt. That's about it. I do it all the time in my plane at small airports all over the place. The security at more urban airports may make it harder to drive to the pumps. David Grah Bishop California