My Continental IO-470 has a coolant leak

Discussion in 'Maintenance Bay' started by 455 Bravo Uniform, Feb 16, 2020.

  1. 455 Bravo Uniform

    455 Bravo Uniform En-Route

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    Lol, made ya click.

    For those of you who have not seen the amount of water created by combustion and condensation, this is the worst I’ve seen. It was after 1.5 hrs flight, cowl flaps closed after climbing, didn’t open again until taxiing back. Starting air temp -2F, at 5000 ft was -19F, and about 5F after landing.

    That’s an oily piece of cardboard that would absorb more oil and shed water. The yellow is an emulsion of oil and water. This is the drippage from the breather vent. Flight was 2 days ago.

    No wonder corrosion happens more quickly with cold operation (ground running) and aging oil. This oil has 12 hrs on it.

    2D202289-7459-4AEA-8849-81C4B860E04F.jpeg
     
  2. tmyers

    tmyers En-Route

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    You need to plan for an emergency replacement of your muffler bearings, chrome work best.

    Sent from my SM-N970U using Tapatalk
     
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  3. Stewartb

    Stewartb Final Approach

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    Insulate your breather tube.
     
  4. donjohnston

    donjohnston Line Up and Wait

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    Mmmmmm. Pancakes!
     
  5. denverpilot

    denverpilot Tied Down

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    And they told us that oil and water don’t mix.

    Don’t worry. Us Subaru owners usually get that from our head gaskets.

    It’ll be fine, they said...
     
  6. Jim Carpenter

    Jim Carpenter Pre-Flight

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    Are you sure that's not just the airport cat with a hairball?
     
  7. Skip Miller

    Skip Miller Final Approach

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    I' have seen similar on the dip stick of an O-360 lyc (Archer) in the winter. Never could get it up to temperature! (No the winterization plate was not on the oil cooler). Owner would not install same. Engine made TBO...

    -Skip
     
  8. denverpilot

    denverpilot Tied Down

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    Should we ask if the IO-470 is supposed to have one? Heh.

    I assumed that it wasn’t installed after the original post. Rarely see them on anything.
     
  9. Arnold

    Arnold Line Up and Wait

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    My A-65 will do that even in warm weather.
     
  10. Skip Miller

    Skip Miller Final Approach

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    Piper Archer. Lyc O-360-A4M.

    -Skip
     
    Last edited: Feb 18, 2020
  11. denverpilot

    denverpilot Tied Down

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    The original post. Not yours. :)
     
  12. midwestpa24

    midwestpa24 Pattern Altitude

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    Around here we usually don't fly piston engine planes below 0F, and avoid doing a lot of stalls or traffic patterns, things that cool the engine down, below +10F. Its amazing how fast the oil temp disappears after a few trips around the pattern in colder temps, even with winterization kits on.
     
  13. 455 Bravo Uniform

    455 Bravo Uniform En-Route

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    I don’t believe it’s supposed to have one.
     
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  14. timwinters

    timwinters Touchdown! Greaser!

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    Can't be water. Must be some other kind of a contaminant. The air is too cold to have enough moisture to allow for crankcase water.
     
  15. Capt. Geoffrey Thorpe

    Capt. Geoffrey Thorpe Touchdown! Greaser!

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    Lots and lots of water from the blow by...
     
  16. timwinters

    timwinters Touchdown! Greaser!

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    My post was dripping with sarcasm and aimed at my second favorite A&P on the planet who I was paraphrasing.
     
    Last edited: Feb 19, 2020
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  17. 455 Bravo Uniform

    455 Bravo Uniform En-Route

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    The moisture content of your sarcasm was impacted by the temperature (no visible dripping). :D