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  1. 579 ultra
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    TEL Lease

    Are TEL lease truck governed
    Post by: 579 ultra, Nov 27, 2023 in forum: Questions From New Drivers
  2. 579 ultra
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    Should I turn up my mx-13 from 435 to 515?

    Where did you get this done at
    Post by: 579 ultra, Oct 20, 2023 in forum: Ask An Owner Operator
  3. 579 ultra
    Post

    Should I turn up my mx-13 from 435 to 515?

    How do you get account?
    Post by: 579 ultra, Oct 20, 2023 in forum: Ask An Owner Operator
  4. 579 ultra
    Post

    Paccar MX-13 can't find a Dealer to increase Horsepower and Torque

    I just bought a 2023 579 peterbilt and empty trailer it can’t make it up a little hill in NM can anyone tell why this is love the truck but hate...
    Post by: 579 ultra, Oct 20, 2023 in forum: Heavy Duty Diesel Truck Mechanics Forum
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