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  1. #1
    Seasoned Camper Papahoosh's Avatar
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    F250 to F350 Gas Mileage

    For those of you who switched from 3/4 ton to 1 ton truck, what gas mileage are you getting now assuming you did not switch the RV.
    I was getting around 11 MPG with my F250 when towing and 18 MPG when not towing.
    I have not tried towing with my F350 yet.
    2020 Reflection 337RLS

  2. #2
    Fireside Member
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    Went from a 250 3:73 7.5 towing 6k trailer gas ...17 mpgbest ever best ever to 350 diesel 355 gear 20+ best. . 10 +
    mpg towing. Gasser was 11mph around town..diesel is 16

  3. #3
    Left The Driveway
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    If the two trucks are very similar, such as having the same final drive ratio, similarly equipped, and same bed size, there should be no difference. The only real differences between the 250 and 350 is a heavier rear spring package and possibly the tire/wheel package.

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    Site Sponsor
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    Quote Originally Posted by Papahoosh View Post
    For those of you who switched from 3/4 ton to 1 ton truck, what gas mileage are you getting now assuming you did not switch the RV.
    I was getting around 11 MPG with my F250 when towing and 18 MPG when not towing.
    I have not tried towing with my F350 yet.
    I am getting similar mileage with my 1 ton.... but my trailer is significantly heavier...
    2019 Solitude 372WB FBP loaded
    2021 Ford F350 King Ranch 6.7 FX4 Long Bed Rapid Red
    1970 Plymouth Roadrunner
    1968 Dodge Charger

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    Site Sponsor Gronk1's Avatar
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    I went from a 6.4L F250 to a 6.7L F350 dually...before I went to a heavier trailer. I was getting about 2mpg better with the 350. That was when the 350 was new. I'm probably doing better now, but haven't checked for a year or two... Didn't buy it for the mileage.
    Paul, Sue & Wonder Dog Zane
    '18 Solitude 310 GK
    "15 F-350 6.7, DRW, CC

  6. #6
    Seasoned Camper
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    I have 2017 F350 DRW diesel and get 14.5 to 15 day to day driving and average about 10 while towing.
    2017 F350 Platinum DRW Diesel
    2017 337RLS
    B&W Companion Hitch
    Memphis, TN

  7. #7
    Rolling Along johndeerefarmer's Avatar
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    Quote Originally Posted by Papahoosh View Post
    For those of you who switched from 3/4 ton to 1 ton truck, what gas mileage are you getting now assuming you did not switch the RV.
    I was getting around 11 MPG with my F250 when towing and 18 MPG when not towing.
    I have not tried towing with my F350 yet.
    From a SRW 3/4 ton to a SRW 1 ton there should be no difference if the powertrain is the same. Seeing you went to a dually I would expect you to lose a couple mpg.
    Donald AKA johndeerefarmer
    2020 Ford F350 Powerstroke diesel
    2017 F150 ecoboost max tow
    2016 Reflection 29RS VIN# 573FR322XG3305717

  8. #8
    Seasoned Camper Hobo Bill's Avatar
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    Quote Originally Posted by suzhou View Post
    I have 2017 F350 DRW diesel and get 14.5 to 15 day to day driving and average about 10 while towing.
    Just for reference ... this old 2007 Ram 3500 Cummins 6.7 4.10 axle dually ... 15.2 mpg not towing ... 9.6 mpg towing ... pretty close to what suzhou is getting.
    Hobo Bill
    From Cuyahoga Falls, Ohio
    Traveling Full Time Across the US
    2019 Reflection 5th Wheel 337RLS
    2007 Dodge Ram 3500 DRW Cummins 6.7 Turbo Diesel
    Goodrich T/A KO2 All Terrain Tires
    Reese RP30081 20K
    [SIGPIC][/SIGPIC]

  9. #9
    Seasoned Camper
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    Just dont let ford reflash the computer. We have a 2016 F450 with the 6.7. Due to an injector problem, Ford replaced all the injectors and they said they had to reflash the computer as part of the service. We went from 19mpg empty and 14mpg towing, to 12mpg empty and 8 to 9mpg while towing. Ford says it's part of their mandatory compliance for smog, think like Volkswagen. I have sence found out there is a lawsuit on going for many years of the 6.7 engine build. The lawsuit is even talking buy back like Volkswagen had to do.

  10. #10
    Seasoned Camper Papahoosh's Avatar
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    Quote Originally Posted by [email protected] View Post
    Just dont let ford reflash the computer. We have a 2016 F450 with the 6.7. Due to an injector problem, Ford replaced all the injectors and they said they had to reflash the computer as part of the service. We went from 19mpg empty and 14mpg towing, to 12mpg empty and 8 to 9mpg while towing. Ford says it's part of their mandatory compliance for smog, think like Volkswagen. I have sence found out there is a lawsuit on going for many years of the 6.7 engine build. The lawsuit is even talking buy back like Volkswagen had to do.
    Thanks for the info.
    2020 Reflection 337RLS

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