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D 8 k

Discussion in 'Dozers' started by catdw20, Jan 24, 2016.

  1. catdw20

    catdw20 Member

    Joined:
    May 9, 2010
    Messages:
    8
    Location:
    Colorado
    We bought D 8 K.The previous owner has ben running 15-40 motor oil in trans.I think its not right because of condensation in trans.anyone know anything about it?
     
  2. Nige

    Nige Senior Member

    Joined:
    Jun 22, 2011
    Messages:
    21,192
    Location:
    G..G..G..Granville.........!! Fetch your cloth.
    Powershift transmission or direct drive...?
     
  3. RedlineDrainage

    RedlineDrainage Active Member

    Joined:
    Mar 14, 2010
    Messages:
    32
    Occupation:
    drainage contractor
    Location:
    NY
    We've always been told run 30 weight and nothing else in our d8k
     
  4. jwest75801

    jwest75801 Well-Known Member

    Joined:
    Feb 8, 2012
    Messages:
    122
    Occupation:
    Owner operator
    Location:
    texas
    To4 is what cat is saying to upgrade to.
     
  5. catdw20

    catdw20 Member

    Joined:
    May 9, 2010
    Messages:
    8
    Location:
    Colorado
    It is power shift .I have always used 30wt in all of my p.s.dozers and scrapers and have never heard of 15-40 in p.s. transmisions. just asking for other opinions. Thanks!
     
  6. oregon96pd

    oregon96pd Well-Known Member

    Joined:
    Mar 14, 2009
    Messages:
    172
    Location:
    Milton Freewater, OR
    Does a k model have a wet flywheel housing? If it does there may be a reason they were running motor oil in the trans......just an idea.
     
  7. catdw20

    catdw20 Member

    Joined:
    May 9, 2010
    Messages:
    8
    Location:
    Colorado
    Not close to tractor to get ser.#It is powershift .
     
  8. Old Magnet

    Old Magnet Senior Member

    Joined:
    May 11, 2010
    Messages:
    1,840
    Location:
    Corralitos, California
    Original engine lube oil was straight SAE30 with recommendation of SAE40 over 90 deg. F.
    Transmission, bevel gear, steering clutches was SAE30 now would be TDTO (T0-4) SAE30 spec.
    Finals were SAE50 now would be TDTO (TO-4) SAE50 spec.
    Do not use engine oils in Transmission Drive Train applications.
     
  9. catdw20

    catdw20 Member

    Joined:
    May 9, 2010
    Messages:
    8
    Location:
    Colorado
    Thank you for information thought 15-40 was not right now I know I will change it tomarrow.Thanks again!