So, it sounds as if everything is ok, right?
So basically, when it's cold out, I should be seeing slightly more frequent and cheaper fillups because the pressure will fall faster than in the hot weather.
With the same amount of propane in the tank, in the cold weather the fridge would shut off sooner than in the hot weather because of the pressure? Thereby requiring slightly more frequent and cheaper fillups? But in the summer, the propane will seem like it lasts longer because of the heat keeping up the pressure? So my fillups should be farther between, but more gallons and cost. (In this explanation I'm assuming the price is consistent year-round for proper understanding of the concept).
Am I understanding correctly? I think I am but I'm having difficulty explaining it the way I'm thinking it works based on what you said.
Maybe another way is by a specific example:
I start out with 10 gallons of propane in the tank.
In the summer, the heat will help produce more pressure in the tank allowing it to run until the pressure drops enough, say at 2 gallons?
In the winter, because it's cold, the pressure cannot be kept up as easily so the pressure would drop sooner, say at 3 gallons?
So, my fillups would be 8 gallons in the summer and 7 gallons in the winter.
If this is correct, mine seems backwards. Here are my stats:
August 5 - original fillup of 12 gallons minus 80% = 9.6 gallons starting out.
September 14 - 7 gallons after 40 days. So, tank was not empty but pressure had fallen below the requirement at 2.6 gallons remaining.
Niovember 11 - 8.2 gallons after 58 days. Pressure had fallen below the requirement at 1.4 gallons remaining.
In both cases I waited until the fridge clicked off before filling up.
In any case, my 12 gallon tank is basically reduced to 7 or 8 gallons of useable propane, depending on the weather. ???