Hell, I'd be afraid to go off roading I might end up at 3-4 mpg...

 

I would try slowing down a little bit. I used to drive about 80 mph to work all the time and realized I was at the gas station more than at work. I slowed down to about 72-73 mph and it seems to have improved my gas mileage. I drive all highway to and from work 50 miles each way. With the big tank 35.7gal, I can get anywhere from 440 to about 470 miles each tank.

 

i only go that fast when im messing around or smokin a chevy and the offroading is just plain fun.

 

For us boys up north we need to remember two words, Winter gas.

Its not going to be as efficent in the winter, its a given. But when I went to Georgia in Dec, I got about 20 on the highway with my 5.4 and 3:55 gears. City currently is around 13ish, shibby but oh well.

Im glad I keped my 97 ranger to beat around in, I drive it alot, expecially around town because a tank lasts alot longer.

 

Using the "over-formulated" gas available in San Diego (and all of California), I was averaging 15 to 17 mpg combined freeway and local. Just had a tune-up (new plugs and a few replaced COPs + fuel filter) and now averaging close to 19 mpg - 5.4L 4x4.

About 70 on the freeways except at higher elevations when I can do over 80 and still get the same mpg.

 

How good are our factory spark plugs? I have always wondered if Bosch (etc) are any better than what FoMoCo uses.

 

Just say NO to Bosch when you're talking about F150's. Many negative posts here about those plugs. Motorcraft double platinum plugs are as good as they get and are matched to your engine.

Stick with the recommendations of Ford and most drivers here.

 

The variety of factors affecting gas mileage on the same truck. Different traffic patters, different elevations, different driving styles, different levels of equipment, different climates. Add in 33s and 80 mph, mileage will go down as opposed to stock tires and keeping her below 70. Have the dealer and 1 independent mechanic you trust check it, and if they can't find anything, stop trying to find something 'wrong' with your truck. You can either afford the mileage or you can't, your beautiful truck is either worth it or it isn't.

 

I was just wanting to know some views from other f-150 owners. Truely I couldn't be happier with my truck, but on the same hand I was just wondering if that was the "normal" gas mileage that everyone else was getting.

 

I'm getting about 13 MPG with mixed driving including A LOT of stop and go traffic.

 

As soon as I drive faster than 75 MPH, my mileage begins to drop.

I've actually had terrible mileage the last two tanks (gas from two different stations). About 300-350 miles per tank. I averaged 15.8 MPG over the first 12,500 miles, and have only been getting 14.8 the last 2,500 miles, with the last two tanks quite bad. This is a huge shift when driving conditions have remained the same. If my next two tanks of gas continue to be sub-par, I'm off to the dealer to get thinigs checked out.

I hear rumors that gas in the winter (at least in the colder northern state) is different than what's offered in the warmer months, and gas mileage tends to decrease. My dad has sworn to this event ever since he's been driving. Not sure if it's true but if so, this could be the issue for some of us right now.

It's hard to gauge MPG from tank to tank. I think it's best to monitor over several fill-ups.

 

Just buy shares in one of the Oil companies and at least some of your hard earned money will be coming back to you in a round about way.
Trev

 

Carl, what kind of MPG do you get driving around here in the South Hills?

I've been averaging around 11 mpg this winter, 13 mpg in the summer time.

 

TTT

 

If you have increased the diameter of your tires, and you have not changed the calibration for the odometer, then your odometer is registering fewer miles than you actually have gone, and your fuel mileage calculations will be distorted accordingly.

Try multiplying your apparent fuel mileage by the current diameter of your tires and dividing by the old diameter of your tires and see if you like the number better.