How to Change a Fuel Filter on a 2002 Ford Explorer | It If you drive a Ford Explorer than you already know that you have to sacrifice fuel economy for power. When you are towing something heavy, your gas mileage will be even worse. One way to get the best fuel mileage out of your Explorer is to regularly change the fuel filter. Ford Explorer Sport Trac Fuel Filter - AutoZone Order Ford Explorer Sport Trac Fuel Filter online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store.