Hey guys, I have a dilemma. I own a 2000 Mercury Sable (same thing as a Ford Taurus) and there’s something fishy about my fuel tank. The owner’s manual, car spec websites and dealer documents all state that it has an 18 gallon fuel tank. However even when I brim the tank after driving around on E, I can never get past 13 gallons into the tank. Yesterday I drove 25 miles after the fuel light came on and the gas pump quit pumping at 12.9 gallons and I only managed to get 13.1 in after that. This is supposed to be an 18 gallon tank! So what gives?
Is my fuel level sensor malfunctioning and I’m driving around with 5 more gallons than I think I have? Is there something inside my gas tank? Ever since watching the show Border Wars, I speculate that there is either a bundle of cash or maybe some weed in the tank (I bought the car used). Even though 5 gallons is not that much, having a 13 gallon tank in a 14 year old car where the MPG has dropped drastically over the years can be a pain. Anyone have any ideas or ways I can get to the bottom of this issue?