Just got back from a trip to Richmond Va. {mostly interstate at 75mph} and got 20 mpg on this tank of fuel I am so happy !!! My truck has 7000 mi. on it with no problems at all i just had to tell somebody figured you guys would be the best place to shout it out !!!!

 

That's great! How did you calculate it? Do you keep a log? Do you use fuel additive?

 

as the heat is growing here i have started to see 19-20 mpg on mine also
14-15 city average is about 17mpg a tank hand and overhead

 

I calculate every tank by hand yes I keep a log of every fillup and a reciept and I use raycor diesel fuel conditioner !!! I guess since this is my best mileage yet I can hope too see the mileage I was looking for {I drive 100 mi. to work -17.8 mpg best yet}

 

23.7 Richmond to Hatteras. 10,000 miles on mine.

 

how do you calculate this? milage at fill up minus milage at last fill up divided by fuel put in?

 

21.1 for me today...600mi on truck. 6.0/5spd

 

thanks for explaining...

 

after 2100 miles and four fill ups 14.5 mpg mix highway and city.
over head shows 17.5 on highway at 75mph. for most part i've been granny driving

 

beakin in my new 2004 250 6.0 4/04 build FX4 camper pkg lwb now has 585miles on it. Freeway driving at variable speeds 40-75 MPH for 275 miles.

Average MPG was 18.33..

Wow , what I read around hear is that it only gets better with time (break in).

Also paid $1.58 a gal. for fuel!

 

Motorace, yes you have the math formula correct.

 

Last fill up here was $1.49. I think it went up this weekend.

 

I Recently bought a 04 6.0L c/c and I am impressed. I had a 02 F250 PSD and I fell in love with the diesel. I just bought mine 3 weeks ago. I clocked 31 MPG. I bought it in Kingsport, Tn and traveled to Norfolk, Va!! I was doing 73 the whole way back!!

 

I just bought a 04 6.0L cc and I traveled from Kingsport, Tn to Norfolk, Va, I clocked 31 MPG. I did 73 the whole way back. I am impressed with the diesel. I had a 02 PSD, but the new 6.0L is out of sight!!!!!

 

WOW 31 is un-real!