ok, my gas gauge, even though i fill it up, doesn't register more then 3/4ths of a tank. not a huge deal, but when i hit E on the gas gauge at around 145-150 miles traveled, i would figure to have something left in the tank, and looking in, it seems as though i do, but the light goes on. is this normal? should i ignore it. with that light on, i am worried about testing it for too long. i fill it up and fill up is only around 3-3.5 gallons. with these scenarios in place i should have 2 gallons left, and i get approx 43 mpg (i do drive hard). is it ok to ignore the light?