cummins vs. Paccar MX13 - which to choose?

Discussion in 'Peterbilt Forum' started by randypinenc, Feb 24, 2020.

  1. randypinenc

    randypinenc Light Load Member

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    I was looking at 2017 T680 with the Cummins ISX 400 and the 2017 T680 with the Paccar MX13 405. If you had to choose, which would you go with? Looking for some solid advice on this and know I came to the right place.
     
  2. truckdriver31

    truckdriver31 Road Train Member

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  3. randypinenc

    randypinenc Light Load Member

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    Thanks for responding. I "was" leaning toward the Paccar but probably because of the warranty provided by Paccar financial Warranty Options | PACCAR FINANCIAL Used Truck Center I have to look at the Cummins in these things (2017 T680) or the Pete 2017 579. Both come with the Paccar MX13 option. Just not sure...
     
  4. terryt

    terryt Medium Load Member

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    Paccar is much more reliable and that warranty I would buy the extend warranty. I have owned cummins for years and there is nothing good about them bad cams, bad fuel pump pistons that cause engine failure, and carbon pack rings and on on. The cummins has more power and less MPG. The paccar is a little weak better MPG the only draw back is that you need paccar shop for the engine work but you have a warranty so it would be at no cost.
     
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  5. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Paccar if you like pain.

    After market warranty covers everything except the stuff that breaks a lot, like gaskets, o rings, and seals.
     
  6. JDstrick

    JDstrick Light Load Member

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    Neither...get Detroit..u need 500 hoss 2...all a 400 gona do is grunt and puff
     
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  7. randypinenc

    randypinenc Light Load Member

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    All else being equal, what do y'all think a good price for this is?

    Year 2017
    KENWORTH
    T680
    Mileage 237,190 mi
    Horsepower 400 hp
    Engine Manufacturer Cummins
    Engine Type ISX
    Engine Serial Number 79939912
    Engine Displacement 15 l
    Transmission Manual
    EATON-FULLER 9 Spd
    Ratio
    3.25
    Drive 6x4
    Suspension AG 400L
    Wheelbase 260 in
     
  8. truckdriver31

    truckdriver31 Road Train Member

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  9. jinxutoo

    jinxutoo Light Load Member

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    Mileage seems low. Low horsepower and only a 9spd.
    A)Is it an old fleet truck?
    B)What does the clutch look like?
    C)Maintenance records?
    D)conditions of tires?
    E)conditions of brakes?
    F)oil sample?
    G)has the DEF filter been changed or cleaned?
    Whole lot of questions, but my first thought on price is $28,000-$32,000.
    The used truck market is saturated.
     
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  10. randypinenc

    randypinenc Light Load Member

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    I ended up going with the Paccar - came with the CPO warranty from KW which is a notch above what is typically given. I had to fight for it but got that warranty which includes a KW inspection which includes among other things a DPF cleaning. So, we will see (fingers crossed)
     
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