Does Siphoning Gas Work?

Siphoning works because of gravity - once you get gas flowing through the tube, it will naturally continue flowing as long as you keep the tube lower than the level of gas in the tank. Because of this, it's usually convenient to just put your gas can or receptacle on the ground under the tank.

Should you siphon gas?

Siphoning works because of gravity - once you get gas flowing through the tube, it will naturally continue flowing as long as you keep the tube lower than the level of gas in the tank. Because of this, it's usually convenient to just put your gas can or receptacle on the ground under the tank.

Does siphoning gas damage your car?

Locking caps protect more than gasoline, they protect the car because siphoning can do some major damage. "The harm it does to a car with a hose going into the fuel tank, you can't get the hose out. ... So once you push it in, now you have to have a mechanic come remove the hose," said Matoza.