HI everyone, new to forum and just purchaced a 2004 dually, I pulled our 28 ft. camper (7800#) from Ohio to Pegion Forge and averaged 10.5 MPG @ 70 to 75 MPHhttp://www.dieselplace.com/forum/smileys/Disapprove.gif. 2 weeks later pulled my buddies 35 ft. (13000#) camper from Ohio to Charlotte N.C. and averaged 8.5 MPG @ 70 to 75 MPHhttp://www.dieselplace.com/forum/smileys/Disapprove.gif (55 MPH up 7 mile hill)http://www.dieselplace.com/forum/smileys/Broken Heart.gif. It has 2500 miles. I have heard the fuel mileage and power will get better with miles, but how much better?

My '02 took a good 10k to run in. I averaged 18 mpg and 16 towung around 3k. The '04 is too new to tell.

Yeah, you have to give it time to break in.

It seems to take time for the mpg average to increase. My 2003 pulling a 18ooolb gooseneck was getting 8mpg...now it gets upwards of 10 mpg...not bad for 24000 combined weight. My 1999 454(vortech or whatever) dually used to get 5 mpg pulling that much weight.


Now my 2003 has over 13000miles on it and the fuel mileage is still increasing slightly.


I am surprised at the mpg difference when empty vs loaded. Empty the 2003 can get as high as 16-17 mpg. Still better than the 1999's 10 mpg when empty. http://www.dieselplace.com/forum/smileys/Cool.gif





ON edit: I think you will be glad you joined.....there is alot to be learned here, especially if your new to diesels.Edited by: Gradyghost

Thanks for the replies, I'm sure this as been brought up many times! I love my D/A and glad to hear it gets better. http://www.dieselplace.com/forum/smileys/Clap.gif I am a mechanic for a city here in Ohio, the only thing i get to work on is powerstrokes in transit buses and firetrucks, dumps, packers, etc.