That is 1974 plus 17 equals 3674 pounds when the 20-pound propane tank is filled. 1 US gallon of gasoline equals 626 6 1 4 pounds. Buy Scepter Fr1g252 Fuel Container With Spill Proof Smartcontrol Spout Red Gas Can 2 Gallon Online In Turkey B08dl9x8rv The exact density cannot therefore be determined but there is a range which is from 071KgL to 077KgL in commonwealth countries and roughly 6073lbgallon in the US. . A gallon of gasoline weighs6073 pounds per US Gallon729 pounds per Imperial UK Gallon. You might be interested. How much does a gallon of gasoline weigh. The weight is further broken down to 27669 liters 61 pounds for a gallon of unleaded gasoline and 32659 72 pounds liters for an imperial gallon of gasoline. 1 gallon of gasoline equals 58 to 65 lbs. It is possible to observe that the engine weight is around 105 percent of the entire aircraft basic operating weight if you sum the two engine weights together 3280 lb