2016 Cascadia mileage

I have 2016 cascadia 125, dd15, 13 speed, 3.58 rears ratio. I run the speed limit in every state. 35000 lbs is the heaviest load I pull. I am at 7.5. I fuel where it is cheapest for me. Usually at the ta petro. I pull dry box.

 

That's pretty good for heavy and pulling a flat. The food service company i worked for were spec'd 10sp, 455hp, progressive shift enabled and got about 6.8 fleet avg. Lots of stop and go city traffic. The newer dt12 autos got closer to 1mpg better

 

Variances happen. Temperature, weight, wind. Winter fuel blends generally drop it some. You might drive a little different, or harder at times. Even if your weights remain the same, your load shapes will vary on a flatbed generally causing aerodynamic differences. You might see more hills one day compared to others. Tire pressures change with temperature. Sometimes you forget to put the cap back on after getting fuel. It all affects it. I get a 1 mpg variance over the year. If you start seeing large mpg drops happening fast, that's when you need to worry.

I get 7.3 to 7.4 in summer and about 6.4 in winter with flatbed. That's doing a lot of 75 mph driving. I am empty half of my miles, as I'm only loaded one way.

As for the fuel, the only difference is whether they have bio or not. Some people swear bio drops fuel mileage but I've never seen it unless it's an older motor. Personally tested with my trucks knowing the exact blends that were in the ground and have never seen a difference. Older motors do have some reasons for avoiding it. Some areas can only get bio blends from the fuel racks these days and that's happening more and more every year. And never fall for "Premium" diesel at any of the small places. They just throw a 2.5 gal jug of concentrated additive in the tank and charge you more. Often they just use a winter blend year round which makes zero sense. That's if the driver even added it. Worked with a couple drivers that didn't even know you were supposed to add it while dropping fuel, and worked with even more that were too lazy to do it. Speaking of lazy, Pilot drivers in particular like to skip additive during the winter because they don't think it should be their job. They usually use two 2.5 gal jugs and that's just too much work for them I guess.

I can't tell you how many times I had guys come up to me telling me they loved the premium diesel. The placebo effect can be amazing.

 

Current trip. DD15 / 10 speed / 3.58's

About half mountains and hills. Cruising 65 to 68.

Loads 12K, 30K, 44.2K, 44.2K

 

Drivers are idiots, don't listen to any of them. Every diesel pump within 5 hours draws from the same diesel bulk tank. All the same fuel. Skip the additives too, they are for stupid people. Your air filter should have a restriction gauge. The mpg you claim is what I got driving a company truck last year with a 12 speed auto. So right in line with a dd15 with dpf intact. You want more mpg, you know what to do....

 

Winter fuel is starting to come out as well, slight dip in milage