Propane Mystery?
The math works out if we go by the specs - 18 gallons times 4.2 pounds per gallon of propane is roughly 76 pounds.
As far as the LED reading 1/3 - that means your tank is somewhere between 1/3 and 2/3 full. The gauge on the tank read 1/2 and that is somewhere between 1/3 and 2/3. I trust the tank gauge and use the LED as “guidance”.
So a half full tank taking on 4.3 gallons probably means you have a 40 pound tank or 9.6 gallons. (40 divided by 9.6 = 4.2 the weight of a gallon of propane.
Check the sticker on the tank - only way to be sure.
__________________
|