fuel mileage

[stang89306]

I have an 06 F 250 with a 6.0 in it... when I first got the truck as I was getting used to it I drove fairly conservativly and was getting like 19 mpg, now into my 5th tank of fuel that ive checked im getting 13 mpg. Is that what I should be getting mpg wise or might there be something wrong with my truck? I dont drive crazy now that im used to it but a little harder than I had when I first got it... Thanks ahead of time for the imput you guys have been a lot of help in previous posts

[pistolpete837]

how many miles on the truck? whats mods if any do you have? do you have stock size tires? is this city or hwy mpg? little more info please

[stang89306]

i have no mods , stock size tires and 34000 miles on it. I always use speedway fuel and use Lucas fuel additive... little of both city and hwy... i dont go over 70 on hwy to try to keep mpg better

[pappy1]

I have a 06 also with 34,000 on it...I avg little over 16 hwy/city

I added some Pro Long oil treatment to mine and seems to help also

[JohnO]

We're into winter diesel now, and that will cost you some mpg's, 1-3 in my experience. In winter, they mix in more kerosene to keep the fuel from jelling, but it doesn't pack quite the punch of the heavier #2, so your mileage drops.

Driving style has a big effect. Big one is acceleration from stop. When I take it real easy, never more than 10psi boost, I'll see 13 in town, as high as 20 on the road at 55, averaging around 16 mixed. Drive it like I would a car, decent but not full gas takeoffs, and the average drops to around 12. High speed really hurts too. I saw 20 at 55, 17 at 65, 14 at 75.

I'm not complaining. A year and a half ago, I was paying $4.60/gallon.

[dbkerley]

I get around 20 avg when being conservative and nowhere near that when I put my foot in it. I get around 14 pulling moderate loads (10k) on level ground.

[stang89306]

thanks for the imput guys... i am going to drive moderately and also going to try a k and n air filter with box... hopefully it will help a little... thanks again

[dbkerley]

With an 06 the CAI won't do you a lot of good the OEM system is good up to around 500hp or so. (I believe) Also, K&N isn't known for filtering all that well either. If you do want to go with one anyway - get an AFE or comparable or DIY it.

Personally, I would stay with the OEM and spend the money elsewhere.