13 MPG?
Mountain Pass
Joined: Mar 2019
Posts: 174
Likes: 85
I’ve been watching mine on the highway and usually running about 79mph out to the ranch, I set the cruise and it’ll show around 19 mpg when cruising steady. My friend has the same truck, a few months older and he said at about 10k mikes he saw a slight improvement in economy (he guessed 1 - 2 mpg depending on situation). I’m in San Antonio and usually fill up at Bucees when going to the ranch and then fill up at a newer HEB station when in town.
Logistics Pro
Joined: Feb 2005
Posts: 3,529
Likes: 390
From: SEVA
Hand calculate all the time and not higher than the LOM. I save each fuel receipt and enter them into an Excel spreadsheet at home. My lifetime calculated average after almost 14K miles (95% local) is 16.4 MPG. My LOM displays over 19 MPG after several miles on the interstate. Downside is regens drop highway MPG more than my in-city regens. Highway regens take longer because the necessary heat is stripped away from the DPF faster at those speeds. The following is from the Forscan thread, but Forscan is not required to recalibrate your Lie-O-Meter ...
https://www.ford-trucks.com/forums/1...l#post18097223
https://www.ford-trucks.com/forums/1...l#post18097223
Logistics Pro
Joined: Apr 2017
Posts: 3,674
Likes: 51
From: SoCal
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: Feb 2019
Posts: 142
Likes: 0
These figures are really low and I’d think there was a huge issue with my truck. I do almost all city and my mpg average over 6200 miles is in the high 16’s. It’s been getting better through regens. I watch the DPF % and when it hits 99% I wait for the mileage to dive and I reset the trip. Does about 14 on my dedicated loop to burn off when it used to be 10-11. On the highway I get high numbers. Driving the 30 miles to the dealership for first oil change the dash read 26. I’ve been wanting to fill up, drive all highway and fill again to see what that hand calcs to. I’m overall impressed with the mileage of this truck. I have filled up at Flying-J for every fill up and use an additive if that matters.
Mountain Pass
Joined: Mar 2019
Posts: 174
Likes: 85
This thread had me curious so when I left the ranch and drove home yesterday, I set the cruise on 79 mph and I was getting between 21 & 24 mpg the whole way home. Mine is all stock, so Tricon’s numbers are even more impressive given the lift and larger tires.
Logistics Pro
Joined: Feb 2005
Posts: 3,529
Likes: 390
From: SEVA
OK, but that sounds like you're believing what the Lie-O-Meter is displaying. They're known to be quite optimistic. There was an image posted in here somewhere of when an owner filled up atop a mountain and the LOM said something like 950 MPG by the time he reached the bottom of the hill. So what was the result of your hand-calculated MPG?
Logistics Pro
Joined: Mar 2019
Posts: 4,064
Likes: 13
OK, but that sounds like you're believing what the Lie-O-Meter is displaying. They're known to be quite optimistic. There was an image posted in here somewhere of when an owner filled up atop a mountain and the LOM said something like 950 MPG by the time he reached the bottom of the hill. So what was the result of your hand-calculated MPG?
Mountain Pass
Joined: Mar 2019
Posts: 174
Likes: 85
OK, but that sounds like you're believing what the Lie-O-Meter is displaying. They're known to be quite optimistic. There was an image posted in here somewhere of when an owner filled up atop a mountain and the LOM said something like 950 MPG by the time he reached the bottom of the hill. So what was the result of your hand-calculated MPG?
Logistics Pro
Joined: Feb 2005
Posts: 3,529
Likes: 390
From: SEVA
Congrats! You're one of the fortunate few. My experience found my LOM to initially be almost 10% optimistic. Since changing the calibration after 10 fill-ups, and again after the 20th fill-up, mine now displays within one to three tenths of the calculated value.
