Running out of fuel

Ok, search function doesn't seem to be helping me on this. I want my aircraft to be able to run out of fuel, have the engine die and such, just like in real life if you run too long. Even though I don't have the "unlimited fuel" box checked, when my tanks empty, they magically refill.
Is there a setting somewhere I'm not seeing? I try and keep my experience with the game as real as possible. Any help here is greatly appreciated.
Never mind, I was silly. I was flying along and got a "ctrl+X" prompt which is for mixture and that is what refilled the tanks. I'm good


Never mind, I was silly. I was flying along and got a "ctrl+X" prompt which is for mixture and that is what refilled the tanks. I'm good

