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DD13 VS DD15

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Gabrieldjr, May 12, 2020.

  1. May 12, 2020 #1
    Gabrieldjr

    Gabrieldjr Bobtail Member

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    Jan 22, 2019
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    I was looking the HP and torque rating for dd13 and dd15. They're the same. So my question is what's the upside to getting one or the other.
     
    Gabrieldjr, May 12, 2020
    Gabrieldjr, May 12, 2020
    #1
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  3. May 12, 2020 #2
    Brettj3876

    Brettj3876 Road Train Member

    11,257
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    Land of local
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    Get dd13 you'll work it harder and will probably have less scr issues (hopefully)
     
    Brettj3876, May 12, 2020
    Brettj3876, May 12, 2020
    #2
  4. May 12, 2020 #3
    AModelCat

    AModelCat Road Train Member

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    Legal loads I'd go 13.
     
    AModelCat, May 12, 2020
    AModelCat, May 12, 2020
    #3
  5. May 12, 2020 #4
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    the road less travelled
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    15 lasts better, supposedly, 13 is lighter. More compact so the vehicle can be shorter and lighter.

    Fuel milage, I don't really know, though the 15s were supposed to be better. Lease company buys whichever, and have been buying daycabs with 15s now, too. The trucks specced for bulk operations are DD13, with wide base single drive tires and disc brakes.
     
    25(2)+2, May 12, 2020
    25(2)+2, May 12, 2020
    #4
  7. Jun 18, 2020 #5
    jason6541

    jason6541 Road Train Member

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    DD15 will have better resale value, also the engine won’t be so stressed all the time like the 13 liter. Emissions will be problems with both if you idle extensively with either.
     
    jason6541, Jun 18, 2020
    jason6541, Jun 18, 2020
    #5
    PE_T Thanks this.
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