Mileage Report

Here's my mileage from the app I keep everything in, also shows how much def I've added (each def purchase is 2.5 gallons).

I pull trailers every weekend. The 8mpg and 10mpg runs were pulling my center console boat into a 30mph headwind at 75mph for 260 miles. Notice that the def consumption is pretty high, apparently it is affected by the stress put on the engine too. I've put in 12.5 gallons of def in just under 8000 miles (not counting the full tank of just over 5 gallons from the factory).
The good news is that the new engine was able to hold the speed (flat land, no hills). I stepped down from a F350 dually with 3.73 gears and the 6.7l Powerstroke and was very concerned about being able to pull the boat at the speed I'm accustomed to.
I used to have a hot shot business and had 11 trailers, 3 big goosenecks that I would haul steel out of Houston on with gross weights of over 40,000lbs. That 6.7 is an amazing engine but I really didn't need it anymore but like the pulling characteristics of diesels. The 3.0 came out just as I was considering downsizing but didn't want a gasser.
So far the engine is doing everything I need it to, its not a 6.7 but for what I'm doing it is 95% just right. I drive in Austin and San Antonio quite a bit so the adaptive cruise control and stop and go are the greatest things ever. Takes a lot of stress out of the drive knowing that if I happen to look away from the road for a few seconds that the truck is watching the road for me and if you drive on I35 you know how much the speeds vary so that adaptive cruise control is amazing.

I love the adaptive cruise control as well.

My hand calculated mpg is 19.94 in my first 3706.1 miles (truck computer reporting 21.1). My best has been in my first 700 miles I hand calculated 23.29 on a 1/2 tank fill up. After my most recent fill up I drove home about 18 miles from that and truck computer said 28.6 mpg, and there have been times in the Fuel History graphs where I have been 30 mpg for several consecutive bars, so I know the truck is capable. I just think the winter blend diesel up here is killing the mpg's.

I look at it this way, my 2010 F150 King Ranch would be getting me about 13.5-14 mpg right now on winter gas, so I am happy right now averaging about 20 with the Diesel.

I am looking forward to having the engine break in period complete (but not sure anyone knows the time or mileage duration on that) and getting past winter blend diesel. I did find one station that specifically said on the pump #2 diesel and to go to the big rig pumps to get winter blend diesel. So once this Polar Vortex passes I am going to go try that fuel (with some Power Service additive for anti-gel protection) and see if my mpg's improve on that tank.

I have also noticed that my best mpg on the Fuel History graph appears once the engine is fully warmed up after a fair amount of driving.

Bottom line is that I love this truck, and have trust that once I get into summer diesel fuel that my mpg's will improve into the expected range. I do have 3.55 gears and the big tow mirrors on mine, and have been thinking they are probably costing me 1.0-1.5 mpg's as I would suspect the EPA ratings were on standard mirrors with 3.31 gears in the rear axle. (Those tow mirrors sure look like they would create a lot of wind drag).

One other thing worth mentioning is that my DFF regens have been happening about every 325 miles (+/-) like clockwork since I started paying attention to them, so that means that every tank I am calculating mpg's on includes at least 1 if not 2 twenty mile regen cycles at 17-18 mpg's during those miles.

Yeah, the DPF Full % up on the display is very helpful to know when you are in regen mode, as the % will drop down to 0% in 5% increments once a regen gets underway--providing you don't stop your highway speed driving during the regen cycle as that will end it (you will go back to 5% up increments again without getting a full soot purge completed from that regen cycle). After I first added it to the display, my first regen after that started once I reached 100% full, but I have noticed since that I have entered regen as soon as 80-85% full at times. I also have a short 10 mile commute to work, so I watch my DPF % Full and I try to time it so that when I am at 70-75% I have a 40 mile drive either to my Monday night pool league location or to my Friday/Saturday occasional run up to play at a poker room. Ever since I used FORScan to get DPF Full % in my IPC display I have been able to avoid the every other day regen event from the short drive to work that I was experiencing 2-3 different times.

By the way, With just over 4,000 miles now I have not yet added any DEF. My DEF gauge reads between 1/4 and 3/8 full right now.

2018 4x4 Lariat F-150 with Moon Roof and Technology package. This is a trip from Gainesville to Palm Beach with average of 66mph. I use ECO-Mode on the driving mode for the highway. If your truck's manufacturer gives you an economy driving mode for mileage, definitely worth the use. I could have gone higher with the mpg if I had started the measurement in gainesville. this is actually just for the miles shown on the dash for this part of the trip after I fueled up. I would imagine 28 or 29 would be possible. My actual mileage was 27.4mpg. This is with a tonneau cover (hard) and a truck full of luggage for the trip.

My mileage is starting to climb. Just filled up and hand calculated at 21.73MPG with 3.55 gears, long bed, trailer tow mirrors--and I was running 4A a bunch on that tank for winter driving road conditions along with Snow/Wet Drive Mode. That was my second best MPG calculation in the first 4,700 miles now. My best so far has been 23.29MPG, but that was only a partial fill of 10.524 gallons and 245.1 miles so likely did not have a DPF regen cycle in that partial tank fill. This recent tank 21.73MPG was also achieved with straight up #2--not a winter diesel blend which I am starting to avoid because I know that has been taking down my MPG's. I have been adding Power Service white additive for anti gel and cetane boost, so with that, feel like winter diesel is unnecessary unless during a Polar Vortex.

In fact, this recent tank I had an entire 30 minutes averaging 30MPG as you will see in the attached photo below, so our trucks are still breaking in and definitely capable of attaining some nice fuel economy.

I just did @ 100 mile test to see what she would do. Truck had less than 200 mikes on her. 18 Lariat 6.5 Fx4 w/3.55 gears. DIC Showed 24.8 hand calculated was 21.99. Temperature was 39 degrees and I assume Connecticut is still using winter blend. I tried to simulate what TFL Truck does for there mileage loop. Cruise control was set at 70 and I waited 30 seconds to top off tank. I’m going to try again in another month when the temperature gets warmer. I was in eco mode for the entire trip and only used the HVAC for maybe a quarter of the trip.