I have an '01 Escape that is creeping up on 230k miles. I love this truck and have had it for about 5 years now. I have noticed that is suddenly has horrible gas mileage. I used to get around 2xx miles a tank, now I am getting 180 miles or so a tank. It has had a tune up within the past two years. Is there a common problem with these trucks with gas mileage? I am going to be changing fuel filter, air filter, and oil this weekend for maintenance. I change oil every 3k miles on the nose. Any common sensors that go bad? I just don't want to be playing the changing-sensors-hit-or-miss game. Thanks!