I have a 2004 F350 FX4 crew cab and it's got about 1200 miles on it 6.0 and I'am getting around 13.2 to 13.5 mpg empty. And I thought I would get at least 16 mpg and this is really bad . Took it back to Ford they done a check on the computer and it has all the up to date programs. I was told it will take about 4 oil changes to get any better. I drive a Volvo semi that pulls double trailers and I get about 9.5 to as good as 11 mpg. So you would think that it would get better than that.
3:73 rears
auto
4X4
mostly highway
75 to 80 mph

 

thanks tim, you know wishful thinking (maybe there's a cure)

 

Sorry I read so many posts I could not remember if you had or not

old mind and all

 

It takes almost double the hp to do 80 than it does to do 60. Fuel mileage will suffer.

Bob. Those are great numbers. Make an old idi'er jealous.

 

Thanks for dropping by Matt, see it is not hard too...

 

Thanks

It's nice to see you over here.

 

I have only 1200 Miles on my 05 6.0 PSD and am averaging 12 MPG around town and 14 MPG @ 90 MPH hauling 5,000 LBS is this good.

 

5000 lbs at 90 mph !!!!!!???????????!!!!!!!!!

you are joking right ?

 

hauling anything at that speed isn't that smart.
What type of tires do you have?
do you value your life?
Did you upgrade your brake's, cause I have a brand new 04 f250xlt stroker x-cab, and the brakes aren't that fabulous...

 

I am dead serious, no bull , all the ways from Chicago to St. louis and back to Chicago wasn't doing the entire way just on open stretches of highway. I was definetly averaging 80 MPH, is it that dangerous? I have the 275 R18 Contico tires, mine is also a 2005 SD if that makes a difference?

 

no experience with the R18tires, obvioulsy, the motor can handle it no problem, my only concern would be what the tires are rated for and the braking.

 

I am defintely gonna slow it down, I didn't think it would be that dangerous, the truck and trailer drive great. Thanx's

 

Hey Bubba,

I would definately ask for that in writing. If he refuses, explain to the gm, don't leave out his name and the tone he had. By the way FIND ANOTHER DEALER!!! Sounds like half of your problems could have been fixed if it was done right the first time. Just about everyone who had a seal done the 2nd time, took it to another dealer and it works fine now. The majority of problems is most definately dealer influenced. Let us know where you're from and hopefully someone can recommend a great dealer near you. If I was in your position. I would wait on the buyback and give a different dealer a chance. If your dealer can't diagnos your problem in one day and fix it in 7 working days or less. They either are complete idiots, they don't care, or they have a parts changer or gasser tech working on it. Either way, you end up with a series of problems that never end. All because the dealer is too cheap to put a diesel tech on your truck.

Best of Luck,
Corey

*Parts Changers*

Example In Point: Buddy of mine had his truck at his dealer for 21 days and they couldn't find a thing wrong with it. Found out he had a gasser tech working on it. Took it to my my dealer, they diagnosed it in just a few hours, and rebuilt his heads in 4 days. I checked with him this morning, he has since put 11k miles on it and it still runs better than when he bought. Again, it's all about the dealer "IF" something goes wrong.