10 spd vs 12 spd Eaton Transmission? Fuel Economy???

Discussion in 'Experienced Truckers' Advice' started by AIV LLC, Aug 9, 2022.

  1. AIV LLC

    AIV LLC Bobtail Member

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    Aug 5, 2021
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    Hi all -

    Working on purchasing my 2nd truck and was wondering if you all have had any experience with the Eaton Ultrashift 10 speed auto transmission- in terms of fuel economy. I had my heart set on a 12 spd, but do these newer 10 speed transmissions do ok? Anybody see a difference in fuel consumption?

    Thanks in advance for any feedback!
     
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  3. KB3MMX

    KB3MMX Road Train Member

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    You're Way better getting the 12 spd endurant.
    The warranty is 5yr/750k

    VS 3/300 for a 10 spd ultra.

    The power transfer efficiency is also a little better.
    The Endurant also uses a computer modulated clutch instead of the jerky centrifugal one used in the Ultrashift.
     
  4. Another Canadian driver

    Another Canadian driver Road Train Member

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    Avoid like the plague the 10 speed with centrifugal clutch. They are horrible due to rough engagement.
    Ask what type of clutch do they have first.
     
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