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  1. #1
    New Member
    Join Date
    Apr 2011
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    2
    Tractor
    2005 JD 790

    Default Milky TransAxle Oil

    I checked the oil in my 05 JD 790, hadn't for a while, and noticed it to be milky in appearance. It was a red oil that was in there (chevron I believe), I had to add oil so I simply put JD LowVis HyGard in when I added my FEL. Could that have made the oil milky? I don't know how moisture could have gotten in there to cause it to happen. Also could it be air from the suction line? I'm going to clean the whole system out regardless, however I'd like some other opinions on the root cause of the problem. I will also mention, the tractor had been sitting for at least a week or two, so I would think that water would have separated during that time. Thanks.

  2. #2
    Elite Member
    Join Date
    Jan 2010
    Posts
    2,635
    Location
    Northern, IL
    Tractor
    Branson 2400H

    Default Re: Milky TransAxle Oil

    Quote Originally Posted by gunhill View Post
    I checked the oil in my 05 JD 790, hadn't for a while, and noticed it to be milky in appearance. It was a red oil that was in there (chevron I believe), I had to add oil so I simply put JD LowVis HyGard in when I added my FEL. Could that have made the oil milky? I don't know how moisture could have gotten in there to cause it to happen. Also could it be air from the suction line? I'm going to clean the whole system out regardless, however I'd like some other opinions on the root cause of the problem. I will also mention, the tractor had been sitting for at least a week or two, so I would think that water would have separated during that time. Thanks.
    If it was air it would have cleared up after sitting for two weeks so my vote is water may settle out but oil will usually stay discolored. Small chance the two different oils caused the discolloration.

    Depending on where you live and how the vehicle is used it may be just water from condensation.

    If you live in an area with large temperature changes and higher humidity the humidity in the air can and will bring moisture into the tranny.

    Is it possible a vent line is dislodged or a breather has come off also.

    Roy
    Artificial Intelligence will never overcome natural stupidity.

    Branson 2400H MMM & FEL

    JD 112

    BX1850 gone but not forgotten

  3. #3
    Elite Member
    Join Date
    Apr 2009
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    3,202
    Location
    adirondacks

    Default Re: Milky TransAxle Oil

    WATER

  4. #4
    Elite Member dex3361's Avatar
    Join Date
    Aug 2008
    Posts
    3,570
    Location
    N. of Charleston WV
    Tractor
    Kubota L4400-1 HST,FEL, 3x3 remotes, TNT. BX1500 54 mmm

    Default Re: Milky TransAxle Oil

    Moisture can turn the oil milky looking and as the previous poster stated so can air entrainment. There is a simple CRACKLE TEST that you can do at home. Read this article from Machinery Lubrication's web site.
    Randall



    1Timothy Chapter 2:
    3 For this is good and acceptable in the sight of God our Saviour;
    4 Who will have all men to be saved, and to come unto the knowledge of the truth.
    5 For there is one God, and one mediator between God and men, the man Christ Jesus.
    From: The HOLY BIBLE

  5. #5
    New Member
    Join Date
    Apr 2011
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    Tractor
    2005 JD 790

    Default Re: Milky TransAxle Oil

    A fellow told me at work today about how much condensation can form going from the garage to the cold back and back in and such. I guess that's probably all, but I did flush the whole works out with some 10/30 motor oil and will be dropping it once more to put proper transhyd oil in.

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