My F250 super duty 6.7l diesel 2011 has poor fuel economy when towing?

Discussion in 'V10 and Diesel Engine Performance' started by Kevinstrek, Jul 30, 2012.

  1. Kevinstrek

    Kevinstrek Junior Member

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    I have the new 6.7 diesel with the DEF. I tow a toy hauler that is about 8000lbs loaded. 22 feet long and I only get 9mpg but when not towing I get 22 mpg or more why? Please help me out.

    Kevin
     
  2. Big'un

    Big'un BillyBadAss

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    wow! seriously?!
     
  3. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    Should be getting better than that?

    I'll check with my friend's father in law
    who just bought a new F250 King Ranch
    6.7 when I get back home from Florida.

    Featherfoot that mamba.
     
  4. Kevinstrek

    Kevinstrek Junior Member

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    Well is there a issue? Is this something that can be fixed?


    Sent from my rzr using Tapatalk
     
  5. Big'un

    Big'un BillyBadAss

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    the diesel guys will chime in here before long , they should be able to help! :waytogo:
     
  6. Old_Skl_Raptr

    Old_Skl_Raptr GrandsonOfTheConfederacy

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    cheese on rice?! my 150 gets better than 9 pulling that much! :batman2:


    just kiddin lol, but you might have a problem
     
  7. 01f1502wd

    01f1502wd going up? yes i am.

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    sounds like you need a good tune that deletes the DEF junk..
     
  8. Kevinstrek

    Kevinstrek Junior Member

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    I'll mention that this truck is a 2011 and is less than a year old. The warranty will be void if removing anything stock. I am just wanting to know if this mpg is normal for the diesel of my make and model.
     
  9. 01f1502wd

    01f1502wd going up? yes i am.

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    oh ya forgot...warranty.

    that sounds about right on empty..but towing..what exactly are you towing? flatbed with jeep on it? box trailer? 5th wheel?
     
  10. Darth Bama

    Darth Bama Administator Staff Member

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    Well we know he's at least hauling an extra 8K lbs.

     

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