ok, now I'm seeing things. Your odometer readings are ok, I'm just not used to those long distances.
Behind the scenes we nix any fuel-up with total miles > 1500 because 99% of the time that's caused by a typo of some kind. We just
put in an override for when people enter a greater value manually, but there's no override for behind-the-scenes odometer/mileage calculations. I just upped the limit to 1700, and we might need to revisit that at some point.
Most of our assumptions are based on a 50 gallon tank max.