Fuel Shelf Life Overview & Applications Propane: Indefinite shelf life. The only limiting factor is the tank and its components. Propane is versatile, used for heating, cooking, refrigeration, vehicles, and more. Butane (Lighter Fluid): Indefinite shelf life. Butane is commonly used in lighters and portable stoves. Isobutane-Propane Mixture (Portable Camp Stove Fuel): Indefinite shelf life. This mix is excellent for portable stoves and lighters. Summary: Propane, butane, and isobutane-propane mi