2011 cascadia dd15 fuel mileage

Truck turned 30K today.

Just finished a heavy (79-79,600 lbs gross depending on fuel) load from West Virginia to Brownsville, TX with a stop in Laredo. Lots of short-choppy rolling hills on this route plus a fair amount of 2-lane in Texas. Oh, and a total of 15 hours idling at night due to the heat.

6.6 MPG. I planned for 6.5 but hoped for 7. I saw as high as 7.4 from mid-TN to Dallas.

 

Makes one wonder: that sounds like reading off of the display for mpg. Wonder how close that was to actual calculated pump to pump fuel mileage. The display on the truck I just traded in was off by about a .5 compared to actual. If it said 8 mpg, I was really around 7.5. Will be interesting to see how my new FL Columbia glider I pick up tomorrow will compare.

 

I noticed with my Century, once the computer got set correctly for tire rotations, diameter and transmission stuff, I am off on my fuel economy by about 0.1 mpg computer vs tank to tank.

I attribute that to the APU running when I am sitting cooling the truck.

 

Got a 2012 Cascadia with the DD15 with the 10spd Auto.
Tank to Tank 6.98 since 6/3
Run Reefer mostly 40 to 45k.
Governed at 65.. I usually run 62-63

 

Actually I get my MPG readings off the flowmeter built in the QualCom. I have to be stopped in order to check the readings and do math once in a while to see what the point to point mileage is as the flowmeter measures overall MPG for a certain trip. As soon as the trip is over it zeros out and starts over.

 

What's the trainer whining about? He's getting paid for your miles too, right?

 

Steve how is the fuel mileage now?

 

i have a dd15 in a 2011 cascadia. at 67mph my rpm's are at 1500!! any advice of where my rpm's should be running at 67mph? im thinking more like 1350-1400. taking it to freightliner to have it rest in hopes of getting a better fuel mileage