Missing 37 gallons
I seem to have 37 gallons of fuel unaccounted for.
I started out Pennsylvania with a full tank and drove 836 miles South to fill up 98 gallons at a Petro in Georgia. I drove around Florida and filled up again the same Petro. I drove along the same route North and filled up with 135 gallons near my house.
My speed was 62-65 mph and the weather conditions were perfect. I ran the generator less on the return route.
What could account for this?