I'm the proud owner of an 04 lightning and have a question.. I had no idea how terrible the gas mileage would be until i got it lol. I mean the trucks fast and all but the gas mileage it gets is bad real bad, in comparison to my old f150 4.6L, (i feel like i can watch the gauge go down).. I think my truck might be running a little rich considering my flowmaster exhaust tips turn black on the inside shortly after a truck wash? but idk.. Do they really do this bad on gas? and what kind of gas mileage is actually expected?

 

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Come on Tim, tell him.............

Welcome to the club 1999f150xlt. I average 10-11 mpg around town and I think I got 12-13 on the freeway, but I'm always having fun with it.........

 

If I keep my foot out of the boost, I get 14-15 mpg (2002). I have a 1997 F150 w/4.6l (4X4; ext cab) and all I can get out of that dog is 14-15 mpg, so except for the premium gas for the L, it's a wash.

The L has a SuperChip Microtuner 1714; CAI; Magnaflow exhaust. Exhaust tips always get sooty from rich mixture.

Jim

 

Join the club. I get 11-13 MPG depending upon driving style. Get a gas miser for the weekdays.

 

the worse adjustments are the premium fuel, and always wanting to get on it. don't know what a 4.6 stocker gets but once you learn to take it easy most of the time LOL, you should get the 14-15, stock I used to get 16-18 taking it easy
welcome to the world of "you want to Play you got to pay" damn FUN no matter what.
And Welcome to the Family