 Because it's going to be something you need only for emergencies, but you need it 100% in an emergency, yearly I would maintain them. I would at least check the oil condition because it could stay in there probably a few years, three, four years if you're not running it. But check the condition of it, and when you do that, I would drain that fuel out, get a suction pump, drain the fuel out, put it in a different vehicle, pull it out of that engine, put it in your truck.