Originally Posted by mcaslaon4449
We just exchanged the original propane tanks with two 10 gal. aluminum tanks. What is the best way to find out how much propane is in the tanks?
Liquid propane is naturally cold. Pour hot water on the outside of the cylinder, and then feel the side of the cylinder. Where the cylinder goes from feeling hot to feeling cold is approximately where the propane liquid level is. The cold liquid propane absorbs the heat from the hot water, right through the side of the cylinder.