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Breaking in a new Cummings diesel???

Discussion in 'Ram Trucks' started by GMSNOW, Oct 16, 2008.


    GMSNOW Member
    Messages: 68

    I just bought a new 2008 3/4 ton - diesel Ram.

    Should I do anything to break in the new truck/motor before I put it to work towing my trailer or snowplowing??

  2. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 7,921

    The book says to get 500 mi on hr first before you tow a trailer.
    Remember to vary your speed.

    After that load up the trailer and get her hot.

    Heat helps the parts in your cdt to get the proper fit and finish.
    Unlike a gasser they like a little heat.

    congrats I just got an 08 CTD too.
    Last edited: Oct 16, 2008
  3. exmark1

    exmark1 PlowSite.com Addict
    Messages: 1,320

    It's a CUMMINS...just a pet peeve of mine!
    Congrats on the new truck! Hows the fuel milage on the 6.7 so far?
  4. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 7,921

    They have a new 6speed tranny too..

    I got 19mpg going 78mph with the air on on the freeway.
    14-17mpg around town.
    hand calc..

    But i only have 564mi on her...
  5. kah68

    kah68 Senior Member
    Messages: 236

    The 500 mile rule is to allow the rear end (differential) to 'wear in'. The cummins is best broken in by working it, period. If you want to do an early oil change thats fine but these motors are meant to be worked.
  6. TEX

    TEX Senior Member
    Messages: 606

    ill 2nd that the best thing you can do is just drive it and dont baby it.
  7. wls

    wls Senior Member
    Messages: 319

    and unplug the egr
  8. 2003ctd

    2003ctd Senior Member
    Messages: 165

    Drive it hard, don't baby it!!
  9. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 7,921

    I agree after the first 500 mi then load up the trailer and head for the hills.

    Heat is your friend for obtaining the proper finish and fit.
    use the jake and don't baby it.
    It's not a gasser.
  10. red07gsxr

    red07gsxr Senior Member
    from meriden
    Messages: 256

    break it in the way you are going to drive it
  11. T-MAN

    T-MAN PlowSite.com Addict
    Messages: 1,363

    No synthetics in the Cummins till ya hit 25K if ya work it hard. If you dont work it 50K.
  12. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 7,921

    I think I'll stick with Shell Rottela.
  13. NBI Lawn

    NBI Lawn PlowSite.com Addict
    Messages: 1,797

    Just drive it, dont try to abuse it anymore than normal. Unless your trailer is a big heavy SOB just pull it.

    Why not run synthetic? I have run Amsoil in my CTD since ~4,000 miles
  14. Camden

    Camden PlowSite Fanatic
    Messages: 6,594


    I wouldn't run synthetic even if I got it for free.

    As far as breaking in the truck goes, once you get a few hundred miles on it find a nice big trailer and load it up with something heavy and hit the road for another few hundred miles.

    Don't baby it or it'll never reach peak performance.
  15. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 7,921

    why? Because I have a lifetime warranty on the drive line for as long as I own it.
    Al-oil is not on the list of approved manufactures of lubricants that I can use..

    why mess up a good thing?;)

    Did you know "not all":nono: of Al's oils are API approve/ certified.
    Some of Al's products MAY be top shelf but why take the risk?

    Tthat,s my next job, I'll have close to 650mi on her then I'm loading up with 5-6k of corn on my trailer and go drive a rolling hwy at 65-70mph and speed up going up the hills.;)
    for about 140mi then change the oil.
    I always like getting that first fill of oil drained earlier then they suggest.
    I wonder if it'll get to hot with the jake on??
    Last edited: Oct 23, 2008
  16. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 10,433

    Wow another Cummings. Are they new from Europe?

    Lucky bastards, synthetic is giving me better performance in my PS. Maybe someday I'll be cool like you guys.
  17. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 7,921

    :rolleyes:;) My 6.7L Benz-A-Cummins BlueTec

    When are you going to stop stroking it with power Mark?
    At some point it becums self abuse..:eek:

    Well,,that's what my favorite 2nd cousin told me anyway and you know where she gets her info:D..
  18. kah68

    kah68 Senior Member
    Messages: 236

    Break should be done with normal mineral oils, if you wish to switch to syn then do so like T-man says. I personally do not see the benefit in running syn in my (3) cummins. I do however run syn in my trans, T-case and axles. I look at it this way, the engine is way over spec'd for the job is was asked to do and the rest of the truck is at max capacity for what a lot of owners are asking it to do. I buy Dodge trucks not because I think they are better than the rest, I just know the engine (properly maintianed) is something I just don't have to worry about.