I wonder if they come up with those numbers with the engine running on a stand. In real world use, there must be more variables. Hull weight, efficiency, prop pitch.Originally Posted by Chris288
I arrive at my #'s by dividing the gallons when I fill up by the hours on my hour meter since last fill. Of course it is a mixture of idle, cruise, and WOT. I think this method is pretty accurate. I look at my hour meter when I get to the gas station and can usually guess within a few gallons how much it will take.