I just bought a Ford F-150 FX4(4WD) w/the 5.4L Triton V8 (I know its notthe same brand, but should give you a genreal idea). I have had it for maybe 3 weeks now and I average 12.5 city driving and 17.4 interstate. Once I hit 3000 miles I will get the oil changed and use a Durablend 5w20 weight oil. I expect to see a small increase in gas mileage then.
Good Luck! Its nice to own a big land hog
