Originally Posted by Jonathan
Another suggestion would be to perform this procedure when you have little or no gasoline in left the gas tank. If you figure (guessing) that gasonline (in liquid form) weighs roughly 50 to 60 pounds for each gallon, then a half tank of gas might mean, like, 400 pounds.
Thankfully gasoline isn't anywhere near that weight. It weighs roughly 6 pounds per gallon for a half tank weight of ~42 pounds.