Comprehensive MPG thread.

Xelvic

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There are always so many variables to mpg, so I will try to add them all in. If you have some I didn't think of let me know and I will add them. Maybe a moderator can make this a sticky?

Before I hear the "it's an HD truck, expect crappy mileage" comments, I get that and expect it and not complaining about it, I still would like to know though!
I'm not sure about Diesel fuel but for the gasser guys, we are still in the winter blend for fuel and when the summer blend gets here we will be getting probably 2% MPG better! For those that don't know the difference here's a link (Winter/Summer gas Diff). My truck is on order so I can't play yet, but I will!

To try and keep this as a legit apples to apples comparison, I would like to do the following criteria. I know it's a lot, but more data points will cut down the variables. Try to answer as many as you can. If you have to leave some blank that's okay too. I made an empty template at the bottom you can copy and paste into your reply to make it easier for you.

Summer Blend May 1st through September 15th
Winter Blend September 16th through April 30th


Engine: 6.7 or 7.3

F250 or F350:

What Blend: Summer or Winter

Mileage:

Stock Oil:
Yes or No (if no Brand and weight)

Hand Calculated MPG or Truck Computer MPG:

MPG City Unloaded:

MPG/MPH Highway Unloaded:
MPG plus your average highway speed

MPG Towing: MPG plus tell us Trailer weight with load/ height/ axles/ Closed or enclosed/ type/ 5th/ goose/ bumper

MPG Hauling: Weight in bed

Octane: 85/86/89/91/92

Tire PSI Unloaded: Front/ Rear

Tire Psi Loaded: Front/Rear

Stock truck: Yes or No

Programmer: Yes or No (if yes, what brand and setting)

Engine/Exhaust/Intake Mods: (if yes what did you do)

Diesel Deleted: Yes or No (If yes brand/ setting/ HP gain)

Stock Tires: Yes or No (if no what size, brand, and weight if known)

Stock Wheels: Yes or No (if no what size, brand, and weight if known

Lifted: Yes or No (if yes lift height and brand)

Reverse Leveled: Yes or No (if yes how much lower in rear)

Elevation from Sea Level: (3% percent power loss per 1000 feet above sea level)

Average air temp: (Cold air is much more dense)

Tonneau Cover: Yes or Know


Empty template below to copy and paste into your reply.


Engine:

F250 or F350:

What Blend:

Mileage:

Stock Oil:

Hand Calculated MPG or Truck Computer MPG:


MPG City Unloaded:

MPG/MPH Highway Unloaded:

MPG Towing:

MPG Hauling:

Octane:

Tire PSI Unloaded:

Tire Psi Loaded:

Stock truck:

Programmer:

Engine/Exhaust/Intake Mods:

Diesel Deleted:

Stock Tires:

Stock Wheels:

Lifted:

Reverse Leveled:

Elevation from Sea Level:

Average air temp:

Tonneau Cover:
 
Last edited:

PapaRaptor

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Very well done.

In SE Wisconsin we have more "normal" gas in winter and when it gets warm they add ethanol. As we get into May the gas prices rise as they give us our "cocktail blend" to save the environment. In Summer there is a heavy dose of ethanol in our fuel. The more ethanol the worse the mileage. Seems more noticeable on my V-8 Raptor and Hellcat ( both big V-8 engines )

Opposite happens with diesel, our winters are very cold so they add #1 diesel and charge more for "winter blend" and as the temps rise in the spring the diesel prices drop and the mileage goes up. They get better MPG with #2 diesel. But if you don't blend it in the cold it could gel.
 

TexasTremor

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Following closely..Gas at $ 1.87 /gal today in South Texas . I am in the shadows of all of the major refiners and fuel is cheap now.
 

MPark

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Man that a cheap. I just paid 3.15 here in Socal
 

Htown Ford

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Empty template below to copy and paste into your reply.


Engine: 6.7 L Smoker

F250 or F350:
F250

What Blend:
ULSD ( attainment area Htown)

Mileage:
16.7

Stock Oil:
factory

MPG City Unloaded:
16.4

MPG/MPH Highway Unloaded:
17.2

MPG Towing:
16.2 7k# hay trailer

MPG Hauling:
1100 # no difference 16.4

Octane:
diesel fuel should be about 40 and would be the Cetane number since inly gassers use r+m/2

Tire PSI Unloaded:
67 87

Tire Psi Loaded:
67 88

Stock truck:
Stock with Ultimate Towing

Programmer: none

Engine/Exhaust/Intake Mods:none

Diesel Deleted: none

Stock Tires: yes 35

Stock Wheels: yes

Lifted: n/a

Reverse Leveled:nope

Elevation from Sea Level:635 feet

Average air temp: 65 F

Tonneau Cover: nope
 

modified

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Thread stuck! Thank you for taking the time to create this, it will be very helpful.
 
OP
Xelvic

Xelvic

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Come on guys, I know there is more than 1 actual owner in here! Post up your results fellas!!
 

Rock Taxi

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Engine: 6.7

F250 or F350: F350

What Blend: Texas Winter

Mileage: 650

Stock Oil: Factory Oil

MPG City Unloaded: 12 - 16

MPG/MPH Highway Unloaded: 15.5 headwind - 19.5 slight tailwind

MPG Towing: unknown

MPG Hauling: 1,000# 19.2 highway no wind

Octane:

Tire PSI Unloaded: 64f - 83r

Tire Psi Loaded: unknown

Stock truck: yes

Programmer: None

Engine/Exhaust/Intake Mods: None

Diesel Deleted: No

Stock Tires: Yes

Stock Wheels: Yes

Lifted: No

Reverse Leveled: No

Elevation from Sea Level: ~500'

Average air temp: 50

Tonneau Cover:
BakFlip MX4
 

Htown Ford

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Empty template below to copy and paste into your reply.


Engine: 6.7 L Smoker

F250 or F350: F250

What Blend: ULSD ( attainment area Htown)

Mileage: 16.7

Stock Oil: factory

MPG City Unloaded: 16.4

MPG/MPH Highway Unloaded: 17.2

MPG Towing: 16.2 7k# hay trailer

MPG Hauling: 1100 # no difference 16.4

Octane: diesel fuel should be about 40 and would be the Cetane number since inly gassers use r+m/2

Tire PSI Unloaded: 67 87

Tire Psi Loaded: 67 88

Stock truck: Stock with Ultimate Towing

Programmer: none

Engine/Exhaust/Intake Mods:none

Diesel Deleted: none

Stock Tires: yes 35

Stock Wheels: yes

Lifted: n/a

Reverse Leveled:nope

Elevation from Sea Level:635 feet

Average air temp: 65 F

Tonneau Cover: nope
So not sure if there is a break in but today fully loaded w fuel and 1300 on the odometer my fuel efficiency jumped to 18.9 and w trailer was at 18.5. Tires at 63/83. Temp was 70 degrees (Texas winter)
 

Whyte Rhyno

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Not enough miles for me yet. So far 13.3 mpg on my commute. Mostly city driving
 

abnmp557

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Drove 1283 miles this week and averaged 18.2 mpg via the truck monitor. That includes screwing around in the sand on the beach and driving approximately 100 miles in 4wd on snow packed roads.

I have put over 3100 miles on the truck in the month I have owned it and the 6.7 has never registered under 18 mpg.

Yeah I know 57 miles to empty is running the tank a bit low, but didn’t get home until 230 in the morning. Will fill the template out later
3BF160FF-67AD-4912-B31B-1DFB23C43212.jpeg
 
Last edited:
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Xelvic

Xelvic

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Bump
 

Mountain Man

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An important variable to include is your axle ratio. I believe they cause a significant difference in MPG.
 

Lasvegasron

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My Platinum 7.3 has been showing 9.4 driving in Las Vegas, My 17 F150 King Ranch 3.5 eco, shows 14.2 doing the same stuff.
Don’t race that EcoBoost, it will eat the 7.3 alive.
I only have 150 miles on the Tremor so it remains to be seen.
 
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Xelvic

Xelvic

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My Platinum 7.3 has been showing 9.4 driving in Las Vegas, My 17 F150 King Ranch 3.5 eco, shows 14.2 doing the same stuff.
Don’t race that EcoBoost, it will eat the 7.3 alive.
I only have 150 miles on the Tremor so it remains to be seen.
Good grief... I think you got the record for the worse MPG. Most people are getting 12s in the city and about 14 on the highway. Usually the 4.30 gears help out with city driving because of the mechanical advantage. 4.30 will hurt a little on the highway because you will rev about 200 higher at 70. I hope mine doesn't get 9.4 unloaded. That'll make me sick!
 

Rock Taxi

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Highway miles only. 97 miles at 65mph for the first leg was 19.2mpg. The remaining 123 miles at 85mph and the total mgp went up to 20.3. All on cruise.

MPG.jpg


Engine: 6.7

F250 or F350: F350

What Blend: Texas Winter

Mileage: 1900

Stock Oil: Factory Oil

MPG City Unloaded:

MPG/MPH Highway Unloaded:
MPG Towing: unknown

MPG Hauling: 1,000# cargo and passengers 20.3 highway slight cross wind

Octane:

Tire PSI Unloaded: 60f - 65r

Tire Psi Loaded: unknown

Stock truck: yes

Programmer: None

Engine/Exhaust/Intake Mods: None

Diesel Deleted: No

Stock Tires: Yes

Stock Wheels: Yes

Lifted: No

Reverse Leveled: No

Elevation from Sea Level: ~500'

Average air temp: 70

Tonneau Cover:
BakFlip MX4
 

modified

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Just read an article on TFLtruck that talked about getting 19.2mpg out of the 2020 6.7l Super Duty Tremor.

2020-black-tremor-tfltruck.jpg

We did drive over 330 miles from Colorado to Moab, UT. We measured the fuel economy at the pump. The truck we drove was a 2020 F-250 crew cab 4×4 Tremor off-road truck. The Tremor has a factory suspension lift and rides on 35-inch all-terrain tires. In the end, the 2020 Ford clocked in 19.2 MPG.
 

Rock Taxi

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Finally got some towing numbers:

Towing1.jpg
Engine: 6.7

F250 or F350: F350

What Blend: Texas Winter

Mileage: 3,000

Stock Oil: Factory Oil

MPG City Unloaded: 12 - 16

MPG/MPH Highway Unloaded: 20.3

MPG Towing: 7,000# car hauling 14.4 highway

MPG Hauling: 1,000# 19.2 highway no wind

Octane:

Tire PSI Unloaded: 60f - 65r

Tire Psi Loaded: 62f - 67r

Stock truck: yes

Programmer: None

Engine/Exhaust/Intake Mods: None

Diesel Deleted: No

Stock Tires: Yes

Stock Wheels: Yes

Lifted: No

Reverse Leveled: No

Elevation from Sea Level: ~500'

Average air temp: 50

Tonneau Cover:
BakFlip MX4
 

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