I filled up today (hemi 31 gal tank) and my needle was on E and the range estimate was 15 miles. I was only able to put 26 gallons in the tank. Based on my average mpg, I should have had a little over a gallon left with that range remaining and needle that low. But with a 31 gallon tank and 5 gallons actually still in the tank you would think the gauge would be higher and show about 1/6 full and ~60 mile range. Is my gauge off or is this normal?