bone
"bangle for president"
silly random question : why is it that when you're refuelling the pump "clicks" to say the car is full, yet if you wait a bit you can still get 3-4 liters more in? Is it because the fuel takes a while to run down the hose thing to the fueltank?
look inside the nozzle, you'll see a big hole where petrol comes out, and a small straw like thingy. that is sucking constantly while you're filling up. from the moment it sucks up anything different from air, the pump stops. and as said before, the first times it will only have sucked in some foam, which settles, enabling you to add a few liters...