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  1. #1
    New Member
    Join Date
    Dec 2012
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    3
    Location
    Waupaca Wisconsin
    Tractor
    Bobcat 632

    Default Bobcat 632 engine oil milky

    I have notice a small milky color on my dip stick. The engine is a ford four cylinder and was apparently completely rebuilt? This runs great and does not blow white smoke of any kind. I did change the fluid and the problem is not going away? Any thoughts or suggestions? The Bobcat is a 1980

  2. #2
    Silver Member HarryN's Avatar
    Join Date
    Aug 2011
    Posts
    189
    Location
    Covington, Louisiana USA
    Tractor
    1999 Bobcat 763F John Deer 850 Grasshopper 723K H2

    Default Re: Bobcat 632 engine oil milky

    Either water or antifreeze must be leaking in there. Is the volume of the oil increasing a bit? Two problems come to mind. 1) small crack in the engine block. or 2) a blown head gasket. Is it kept outdoors? Rain water getting in there some how? Just a few suggestions...

  3. #3
    Gold Member pedalstomper78's Avatar
    Join Date
    Aug 2010
    Posts
    449
    Location
    Ohio
    Tractor
    Case/IH DX33

    Default Re: Bobcat 632 engine oil milky

    Unfortunately, Harry is right and milky looking oil is a product of oil trying to mix with water. If the problem comes back quickly, there's a pretty substantial issue. The best thing to check with this would be to run a cooling system pressure test. You can get a tester from AutoZone for free (their tool 'rental' program). It should hold consistent pressure for 15-20 minutes. If not, it's the perfect way to find any coolant leaks.

  4. #4
    New Member
    Join Date
    Dec 2012
    Posts
    3
    Location
    Waupaca Wisconsin
    Tractor
    Bobcat 632

    Default Re: Bobcat 632 engine oil milky

    I appreciate the advice...I will do it this weekend. The machine always stays indoors.

  5. #5
    Silver Member HarryN's Avatar
    Join Date
    Aug 2011
    Posts
    189
    Location
    Covington, Louisiana USA
    Tractor
    1999 Bobcat 763F John Deer 850 Grasshopper 723K H2

    Default Re: Bobcat 632 engine oil milky

    If the engine was "just" rebuilt. and you're having this problem, I would say someone must have messed up a bit!
    By the way, my grand parents had a cottage in Waupaca. On Minor Lake. Great memories there. Silver Lake too!

  6. #6
    New Member
    Join Date
    Dec 2012
    Posts
    3
    Location
    Waupaca Wisconsin
    Tractor
    Bobcat 632

    Default Re: Bobcat 632 engine oil milky

    Thats and awesome chain of lakes for sure. I agree...I noticed this in the summer awhile back just a small bit on the dip stick...seems to be getting worse. I do not see any milky stuff on the filler cap at all. I'm sure I will have a head gasket problem.

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