How to remove emulsified oil

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  • T27_478
    Senior Member
    • Jun 2013
    • 30

    How to remove emulsified oil

    Ok,

    so I think I finally solved my getting water in the engine problems. Time for the oil change or three as recommended by Moyer. I'm running into a problem however: the emulsified oil is too thick, it's like sucking mayonnaise through a straw using my vacuum pump. I've tried to heat it up by warming with little improvement. Any suggestions or am I stuck with either 1) spending a whole weekend pumping until I'm red in the face or 2) pull the engine and open up the crank case.

    With a beautiful weekend coming up and a few months of the season left neither sounds too attractive.

    thanks in advance.
  • zellerj
    Afourian MVP
    • May 2005
    • 304

    #2
    time to play chemist

    Take a little bit of emulsified oil and put it in a small glass and start experimenting. You need to figure out what you can add to the emulsion to break it into two layers or to thin it so you can suck it out of the engine. I would try gasoline, a small amount of liquid soap, more water, and more oil. I would think that one of these four experiments will yield a useful result.

    What works in the small glass will probably work in the engine block.

    Best,
    Jim
    Jim Zeller
    1982 Catalina 30
    Kelleys Island, Ohio

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    • joe_db
      Afourian MVP
      • May 2009
      • 4474

      #3
      I would try putting MMO in or maybe kerosene. You also can remove the 3/4" plug under the carb to stick a bigger hose into the oil pan.
      Joe Della Barba
      Coquina
      C&C 35 MK I
      Maryland USA

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      • edwardc
        Afourian MVP
        • Aug 2009
        • 2491

        #4
        +1 on using the 3/4" plug. Been there, done that. It helps a lot.
        @(^.^)@ Ed
        1977 Pearson P-323 "Dolce Vita"
        with rebuilt Atomic-4

        sigpic

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        • JOHN COOKSON
          Afourian MVP, Professor Emeritus
          • Nov 2008
          • 3500

          #5
          Time Too Play Chemist II

          Put some of the goop in a glass as suggested then try vinegar.

          TRUE GRIT

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          • BunnyPlanet169
            Afourian MVP, Professor Emeritus
            • May 2010
            • 952

            #6
            Try this out of the engine

            As stated, play chemist outside the oil pan first!

            This sounds counter intuitive, but these folks suggest adding more water.

            States of Coexistence Moisture is the second-most-destructive contaminant found in machinery, next to particle contamination. Moisture can exist in oil in the following three states or...


            I might have tried ethanol myself, but I worry about the explosive vapors....
            Jeff

            sigpic
            S/V Bunny Planet
            1971 Bristol 29 #169

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            • Dave Neptune
              Afourian MVP, Professor Emeritus
              • Jan 2007
              • 5046

              #7
              T27_478 et all

              When you notice emulsification of water into the oil, that is the time to get the KRAP out of the engine~not later~never let it sit!!!

              That is how things get rusted up inside and STUCK!
              Get it out and put in fresh~start engine even with the water disconnected for a minute or so then suck that out as it will be emulsified too~repeat until the oil looks good after a minute of running. Running for a minute at 1500 "DRY" will not hurt anything, you can just put the pumped water from the water pump into a bucket or just run the pump dry and change the impeller later. Just get the water out of where it should never get or especially reside for a while.

              Dave Neptune

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              • T27_478
                Senior Member
                • Jun 2013
                • 30

                #8
                lessons learned

                ok, 5 oil changes later and I have some info for future members faced with removing oil that has turned into paste.

                1) open up the transmission cover and pump out the goo using the largest size hose you can use. This goes extremely slowly and you will need to move the hose around a bit to get all of the junk. You can find a section that leads forwards towards the main crank case and suck there too. The highly emulsified oil is very thick and will not flow well so you need to find it.

                2) pour in some marvel oil and run for 30 seconds or so. This will thin out the gunk a bit.

                3) at this point I was able to slowly pump the sludge out through the dipstick hole although slowly. I got impatient and added more mmo once it was below the low mark on the dip stick to loosen things up more.

                4) Start changing the oil as you normally do. After a few MMO treatments things flow better. Keep an eye on the dipstick after every change and quick running of the motor; you are done when the oil is clear after running for a minute or so. I recommend doing one more just to be sure

                All in yesterday I ran 15qts of oil through my tartan, lots of work. I'm just hoping that all of the water was due to stuck valves and not a cracked block. I guess I'll find out today when run with the coolant flowing.

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