midair refueling on multiplayer

[Exile34]

im not sure how to (or even if u can) refuel in midair and if so how do u open the tank  ???  

[JRoc]

Well, it is possible, but it isn't automatic, I'm not sure if there's a guage that does this or not, but what I'd do is set up a keystroke for 'Fuel Refill" (cant' remember the actual command title), like Shift-F for something.