I have a 5.4 4x4 1999 expedition. I bought it used in 2003. The best MPG I have EVER gotten from this machine is 12! I get 12 weather I am towing or not. Highway, city rain, snow, dry I get 12. I would kill for 16 and some of you get 21 ! Did you put a diesel in it or something?
Should...
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