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need help deciding on a truck ISX or MX ?? DEF or plane DPF?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Lucar, Oct 24, 2014.

Page 1 of 2
  1. Oct 24, 2014 #1
    Lucar

    Lucar Road Train Member

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    Aug 22, 2012
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    My uncle is trying to get a truck, so he's got down to 4 and I dont know what to recommend.
    1st
    2011 KW T660 with 485 ISX, "NO DEF" 615k miles
    -13 spd, 86" sleeper
    2nd
    2012 KW T660 -450 ISX "with def" 10 spd 550k miles and[HR][/HR] $4k more
    3rd
    2012 Pete 587 MX 435 "WITH DEF" 550k miles -13 spd
    4th
    2011 Pete 386 ISX 485 "NO DEF" 590k miles
    13 spd and APU

    same price on all but the 2012 t660.

    What you guys with experience on these would say is the better deal?
    Which one will do better mpgs and which one would do less downtime?
    What should we ask the dealer for when purchasing?
    Thanks for the input.
     
    Lucar, Oct 24, 2014
    Lucar, Oct 24, 2014
    #1
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  3. Oct 24, 2014 #2
    gerardo1961

    gerardo1961 Road Train Member

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    in me opinion the best is the KW 660 with DEF without Def you have big troubles with repairs
     
    gerardo1961, Oct 24, 2014
    gerardo1961, Oct 24, 2014
    #2
    Lucar Thanks this.
  4. Oct 24, 2014 #3
    magoo68

    magoo68 Road Train Member

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    st malo mb canada
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    12 kw 660 with def other than 10 sp gets my vote dpf only is just too chancy and the early mx was in shop for codes often
     
    magoo68, Oct 24, 2014
    magoo68, Oct 24, 2014
    #3
    Lucar Thanks this.
  5. Oct 25, 2014 #4
    Lucar

    Lucar Road Train Member

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    Aug 22, 2012
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    Somehow I am not having too much faith in the 1st def cummins, what do you think? Is this the motor that needs a rebuild every 400k-500k miles?
     
    Lucar, Oct 25, 2014
    Lucar, Oct 25, 2014
    #4
  7. Oct 27, 2014 #5
    gerardo1961

    gerardo1961 Road Train Member

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    when you buy a cummins better 12 up ,only for me my opinion es Detroit less troubles,with cummins the parts is very expensiv (Turbo). a friend mine have a 780 with cummins 450 k a new turbo I prefere Detroit
     
    gerardo1961, Oct 27, 2014
    gerardo1961, Oct 27, 2014
    #5
  8. Oct 27, 2014 #6
    Edgar2191

    Edgar2191 Light Load Member

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    I would get the first truck. Why pay extra for def?
     
    Edgar2191, Oct 27, 2014
    Edgar2191, Oct 27, 2014
    #6
  9. Oct 27, 2014 #7
    allisonisatranny

    allisonisatranny Light Load Member

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    Oct 6, 2014
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    Well, the reason you would pay extra for that DEF truck is they typically do better on fuel economy that something with out DEF and are a lot more reliable too.
     
    allisonisatranny, Oct 27, 2014
    allisonisatranny, Oct 27, 2014
    #7
  10. Oct 28, 2014 #8
    jd2210

    jd2210 Light Load Member

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    Oct 23, 2009
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    IMHO post DPF/pre DEF engines are the worst motors ever. I'd never own one again. Ever. Actually to be honest everything you listed is a problem child (which is why the prices are low). Any DPF engine is garbage, early DEF cummins trucks had a ton of issues and still do, and the early MX's had a lot of issues as well. The only MX I'd recommend is a 2015 500/1850 and it seems to be absolutely phenominal.
     
    jd2210, Oct 28, 2014
    jd2210, Oct 28, 2014
    #8
  11. Oct 29, 2014 #9
    russtrucker

    russtrucker Road Train Member

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    I heard that post 2013 cummins isx has less breakdown than earlier def isx.
     
    russtrucker, Oct 29, 2014
    russtrucker, Oct 29, 2014
    #9
  12. Oct 29, 2014 #10
    BigJls1

    BigJls1 Medium Load Member

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    Dec 25, 2012
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    Didn't he say no California.. Why in the world would you get anything other than a glider.
     
    BigJls1, Oct 29, 2014
    BigJls1, Oct 29, 2014
    #10
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