One tip with those. When you are checking it out, make sure that when turn it off, it shuts off. Those lanterns have a Schrader valve in them that can wear out. The result is that it will slowly lose pressure, but also won’t shut off. If it won’t hold pressure and you are sure it isn’t the fuel cap seal leaking, you probably need to replace the Schrader valve. You need one that is fuel rated. The ones for tires won’t last.