It's a 10 gallon tank. Generally when it reads 0% on level roads it will take about 6 gallons to top off. The Odometer and Trip meter are tied together so there will be errors involved.
I trust the Speedometer and Fuel Gauge as far as I can throw them. The fuel pump and the fuel gauge are separate units and the gauge is at the rear of the righthand tank so that If you are going down hill the fuel drops and if you go uphill its back!
I try to fill it at about 200 miles. Having 4 gallons remaining is a nice cushion as, if you are careful, you've got at least another 100 miles before panic sets in.
Other cautionary note is that the fuel intake on the pump sits at the very bottom of the tank. If water is in the fuel it will sink to the bottom and then you are hosed. Don't do that. Another reason to use only high octane ethanol free fuel is that ethanol attracts water. Bad move. Ethanol also eats the seals on the fuel pump. or something... The fuel pumps have their own issues...
