My dad showed up to deer camp 15yrs ago with a then 30yr old Coleman lantern that he hadn't checked in 20yrs...............OR before leaving home. No surprise, the fuel cap gasket was shot, and it was to be our main light source in camp.
A four hour round-trip later we had a new cap, and a new second latern. When he's giving me a tough time about something, I remind him about his lantern.