My Grill doesn’t have a Gas Gauge. Is there any way to tell how much propane is in the tank?

By Using a Gauge: Grill stores sell screw-on gas gauges you can install between the valve on the top of the propane cylinder and the hose that takes the gas to the grill. Gas gauges are available at grill shops or via the Web.

By Condensation: Pour a cup of boiling water over the outside of a propane tank. The water will form droplets of condensation over that part of the tank that’s still full and will evaporate over that part of the tank that is empty, so you can see how much propane is left.