MPG
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MPG
Recently bought a 2011 f-350 6.7 with 56,000 miles and my neighbor just purchased a 2013 F-350 6.7. He is getting around 18 MPG while I am only seeing about 13.5 MPG unloaded. Were there any changes made between these years that would give the 2013 better fuel economy than the 2011? Obviously driving conditions play a huge factor in fuel economy but I drive like a damn grandpa most of the time.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,607
Likes: 151
From: SE Georgia
ask around in the 6.7 forum, or here
but reset the PCM and TCM. when you buy a used Ford, you get all of the previous owners driving habits saved by the PCM/TCM. They gradually phase out the old with the new driving information as you drive...but it's not an overnight process.
I'd do that first, then do the simple stuff like oil change, air filter and whatnot
remember also, peoples driving habits. I can take a vehicle and easily get 2-3 MPG better than someone else with the same vehicle. It's all about how you drive. You neighbor might drive like an old fogey and use CC everywhere and stay at 55 mph. just too many variables
but reset the PCM and TCM. when you buy a used Ford, you get all of the previous owners driving habits saved by the PCM/TCM. They gradually phase out the old with the new driving information as you drive...but it's not an overnight process.
I'd do that first, then do the simple stuff like oil change, air filter and whatnot
remember also, peoples driving habits. I can take a vehicle and easily get 2-3 MPG better than someone else with the same vehicle. It's all about how you drive. You neighbor might drive like an old fogey and use CC everywhere and stay at 55 mph. just too many variables
Postmaster
Joined: Sep 2006
Posts: 2,598
Likes: 5
From: Maryland
Gear ratios, tire size, tire type and 2wd vs 4wd comes to mind. Guys with the 3.31 gears seem to do a little better than the 3.55 equipped trucks. Even 2 trucks equipped with 3.55s see a difference between 18" & 20" tires. One thing that these trucks are not very tolerant of mpg wise is idling. Idle time to warm up the truck, run the AC or have a 15 minute conversation with the neighbor are the death of fuel mileage in these things. Stop and go driving also makes it very difficult to achieve good economy.
At 56,000 miles without knowing the maintenance history of the truck, I would definitely replace the fuel and air filters. This may help you a little bit, but I don't see you gaining more than 1 or 2 mpg at best.
At 56,000 miles without knowing the maintenance history of the truck, I would definitely replace the fuel and air filters. This may help you a little bit, but I don't see you gaining more than 1 or 2 mpg at best.
New User
Joined: Aug 2011
Posts: 22
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Recently bought a 2011 f-350 6.7 with 56,000 miles and my neighbor just purchased a 2013 F-350 6.7. He is getting around 18 MPG while I am only seeing about 13.5 MPG unloaded. Were there any changes made between these years that would give the 2013 better fuel economy than the 2011? Obviously driving conditions play a huge factor in fuel economy but I drive like a damn grandpa most of the time.
I'll try and get some highway miles on it this weekend to see how the mileage increases....
Freshman User
Joined: Jul 2009
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I have a 2012 DRW 4X4 with 3.73 gears, and 5600 miles. I just made a trip of about 340 miles driving 70 most of the way, except for about 20 miles in a funeral procession, and I hand figured 16.0 mpg for the trip. Gears do make a difference.
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Freshman User
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Is he hand calculating numbers? I find mpg stories are a lot like fish stories. Generally exaggerated a fair bit.
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Hotshot
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
My '12 F250 is just over a year old. I use it for towing my car trailer, around town for tasks (a bed full of wood flooring), carrying more people comfortably, or long haul drives in short time (empty).
I track all the mileage. (numbers below all hand calculated)
Best I've seen, one tank, 17.8mpg, 400 miles round trip to dallas and back in the same day.
towing my 7,000lb flat front closed trailer, 11.8-12.3
normal 16.5
average over 12,000 miles, 15.42
my mileage gauge is is off by about .4-.6 , last tank was actual 16.25, LOM was 16.7
I track all the mileage. (numbers below all hand calculated)
Best I've seen, one tank, 17.8mpg, 400 miles round trip to dallas and back in the same day.
towing my 7,000lb flat front closed trailer, 11.8-12.3
normal 16.5
average over 12,000 miles, 15.42
my mileage gauge is is off by about .4-.6 , last tank was actual 16.25, LOM was 16.7
Postmaster
Joined: Sep 2006
Posts: 2,598
Likes: 5
From: Maryland
At the same time with the tank topped off every time, the fuel pump claims to have pumped 2.5% to 3% more fuel into the tank than the fuel economy meter says that I have burned. Basically when accounting for the odometer error and "hand calculating" based on the pump gallons, I come up within less than 0.25 mpg different than the "LOM". The difference that you stated above comes in at about 2.7% oddly enough.
I will be getting new tires of a slightly different size next week and will recheck my odometer at that time, but since the new tires are only 0.5" or 1.1% larger, I don't expect to see any earth shattering changes.
Hotshot
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
Have you checked the accuracy of your odometer? When my tires were nearly new, I found the odometer to read 3% low. When checked by both driving a known measured distance of 10 miles and using GPS, I confirmed that I was actually traveling 3% further than my odometer was registering. Now that the tires are worn out I have not checked it, but the 3% should have grown slightly as the tire diameter has lessened.
At the same time with the tank topped off every time, the fuel pump claims to have pumped 2.5% to 3% more fuel into the tank than the fuel economy meter says that I have burned. Basically when accounting for the odometer error and "hand calculating" based on the pump gallons, I come up within less than 0.25 mpg different than the "LOM". The difference that you stated above comes in at about 2.7% oddly enough.
I will be getting new tires of a slightly different size next week and will recheck my odometer at that time, but since the new tires are only 0.5" or 1.1% larger, I don't expect to see any earth shattering changes.
At the same time with the tank topped off every time, the fuel pump claims to have pumped 2.5% to 3% more fuel into the tank than the fuel economy meter says that I have burned. Basically when accounting for the odometer error and "hand calculating" based on the pump gallons, I come up within less than 0.25 mpg different than the "LOM". The difference that you stated above comes in at about 2.7% oddly enough.
I will be getting new tires of a slightly different size next week and will recheck my odometer at that time, but since the new tires are only 0.5" or 1.1% larger, I don't expect to see any earth shattering changes.
1/2 mpg is close enough for me to estimate.
Monday I drove til there was 35 MTE, and put 21.9 gals into the SB 25gal tank.
Sam
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Senior User
Joined: Oct 2012
Posts: 151
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From: Terrell, Texas
rcjohn44, i noticed in your avitar you have a 5er in the background. What kind of mpg's are you getting? I have the same towing rig as you: 2011 f350 drw lwb fx4. I'm @ about 22k lbs on the scale so i'm guessing 12.5k trailer wait. The few times we've used the 5er it has ben on short 20 mile trips to the local state park. Just curious on mpg's on longer trips this fall.
But to the op i average about 14 mpg calculating by hand with my drw. With an oil change every 5k and fuel and air filter @ 15k. I average about 1500 miles a month and 80% of that is highway at 70-75 mph. the other 20% is in town driving with lots of stops and starts and hardly get above 35 mph.
But to the op i average about 14 mpg calculating by hand with my drw. With an oil change every 5k and fuel and air filter @ 15k. I average about 1500 miles a month and 80% of that is highway at 70-75 mph. the other 20% is in town driving with lots of stops and starts and hardly get above 35 mph.
Lead Driver
Joined: Nov 2005
Posts: 5,245
Likes: 4,266
From: Kaysville Utah
My mpg has been as low as 7.5mpg and as high as 23mpg.
It really depends on what you are doing.
65 mph on a 300 mile long flat hiway will get you in the 20's
80 mph on a 300 mile long hiway drive will get you 18's
city driving will get you 13-15 mpg
Towing a large 5ver in a head wind will get you 7.5mpg.
Towing same trailer with out the headwind will get you 10.5 mpg
My avg for 85,000 miles is below in my signature. Thats' towing, hiway everything combined for the life of my truck
It really depends on what you are doing.
65 mph on a 300 mile long flat hiway will get you in the 20's
80 mph on a 300 mile long hiway drive will get you 18's
city driving will get you 13-15 mpg
Towing a large 5ver in a head wind will get you 7.5mpg.
Towing same trailer with out the headwind will get you 10.5 mpg
My avg for 85,000 miles is below in my signature. Thats' towing, hiway everything combined for the life of my truck