1) Give it the gas 2) Regular container 
A fuel tank (or petrol tank) is a safe container for flammable fluids. Though any storage tank for fuel may be so called, the term is typically applied to part of an engine system in which the fuel is stored and propelled (fuel pump) or released (pressurized gas) into an engine. Fuel tanks range in size and complexity from the small plastic tank o...
a reservoir used to store fuel for delivery to engine.
A tank containing the fuel supply for an aero-engine.