Oil Catch Can, Eliminate that knock!

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by danlatu, May 22, 2017.

  1. Mendel Leisk

    Mendel Leisk Senior Member

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    I'm catching at a similar rate, albeit less cus our usage is a lot less. Barely 500 kms monthly. There are a few others have their occ's fill real fast, not sure what's up with that. Hopefully not coolant...
     
  2. eunique

    eunique Member

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    Thank you very much to all contributors and all the great info in this thread. It took me a while to read all pages and posts. I finally finished my install of my OCC Reuien style from the ebay links. I did clean EGR, EGR cooler, pipe, intake, MAP, new PCV. My cooler was not as bad as some on here with 171,000 miles on my 2013 (Northern California, San Jose area).

    I am afraid that I may have further trouble. By the time I read to the part of the thread where someone mentions head gasket problem and possibility and to check coolant level, (after 4 days since knock started during the cold and rainy months) my coolant was low.

    After the install and cleaning, I still get an occasional knock / rattle on cold start. I had refilled my coolant and trying to observe if it is loosing. I had to top off a few ounces coolant after a few hundred miles...(not too sure yet if it was actually loosing coolant). I do not see any leaks. [​IMG][/IMG]

    Note 9 ?
     
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  3. Mendel Leisk

    Mendel Leisk Senior Member

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    No pink crusties seen from below, underside of water pump? Funny, but I guess that would be preferable.
     
  4. qettyz

    qettyz Active Member

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    More short trips = more moisture to the engine and then to the OCC when engine heats up properly.
    I drive much quite short trips, under 5-10km many times, car always outside. On colder weather(not yet freezing) i got so much more then to OCC after driving little longer after short trips. On long trip engine heats up good and moisture starts getting out via PCV.
    Then at summer, no moisture at all. Or also during one cold week, i drove only couple longer(one hour) trips and also no water at OCC.

    I chose not to use OCC at all on freezing temps like i have written before. I rather ”burn” those moistures than get em to the OCC where they can potentially freeze.

    Short trips also reason for me to change oil every ~7k km.
    There is also ”rule of thumb” here in Finland. If you drive lots of short trips at winter, then be sure to take car at least once a week to longer hour or so trip. That will dry out engine at it will really like it.
     
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  5. Tlcruiser

    Tlcruiser New Member

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    I’ve searched for this bracket and can’t figure out how to order one. Can you help? Thanks!!
     
  6. NutzAboutBolts

    NutzAboutBolts Senior Member

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    Send @danlatu a message. He has a link on his profile where you can order one
     
  7. TheChip

    TheChip Senior Member

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    Edit: wrong thread!
     
    #1327 TheChip, Apr 5, 2019
    Last edited: Apr 6, 2019
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  8. sumguy

    sumguy Junior Member

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    Bought a 2010 gen3 trim IV new in Aug 2009 and only have 54.5k miles. Work commute is ~17mi round trip. With a short commute and freezing temp winters would this end up being a "high "maintenance mod?
     
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    Do you mean is it worthwhile to do?
     
  10. sumguy

    sumguy Junior Member

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  11. Mendel Leisk

    Mendel Leisk Senior Member

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    Then yeah. It's good for anyone really. There were some worries about protracted sub-freezing winter temps maybe freezing up an OCC, with bad results. I'm not sure how serious that is. A pool at the bottom of the intake manifold is inevitable without one, and who knows how much stuff didn't condense and stay there, blew through, carbonning up the combustion chamber, the EGR.

    @qettyz (up the page, located in Finland) I believe takes his out through winter, concerned about freezing. I think I'd rather just monitor, see if it was in fact freezing, and also consider something like an oil pan heater, to keep it from freezing. Winter is when you tend to accumulate the most.
     
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  12. Threej

    Threej Member

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    Even if the stuff at the bottom of your OCC freezes, isn't that the equivalent of just having a slightly smaller OCC?
     
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  13. Mendel Leisk

    Mendel Leisk Senior Member

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    Depends on the internal labyrinth. Mine's a couple of steel wool "Wheaties", in the flow, and I think if they froze solid it'd be problematic:

    upload_2019-4-7_10-14-47.png
    That's the top half, pictured. The bottom half is basically a screwed-on cup, with a drain spigot.

    OTOH, the engine bay is warm, once the car is warmed up, but how long does that take? FWIW, I had no problems, but very mild west coast winters, once or twice got below minus 5C, in the dead of night.
     
    #1333 Mendel Leisk, Apr 7, 2019
    Last edited: Apr 7, 2019
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  14. Mendel Leisk

    Mendel Leisk Senior Member

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    1790 kms since I last checked the oil catch can, 80 cc drained today. Pretty watery, caramel stuff. Rain winters seem to result in a lot more accumulation.
     
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  15. Bay Stater

    Bay Stater Senior Member

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    This past Winter, I took out the wire mesh wheatie from the OCC to give it more volume. I think it was just as effective collecting contaminated creamy caramel fluid. May not replace the wheatie. The OCC is a Ruien style installed behind the left front headlight.
     
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  16. gliderman

    gliderman Active Member

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    Saw this today:

     
  17. danlatu

    danlatu Senior Member

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    Had some electrical issues regarding rats/mice. I will post in a new thread what happened. :eek::eek::eek:

    IMG_1668.JPG

    Took a peek inside the throttle body when I had everything opened up with 129,3XX. This is our 2010 prius that has the ball jar occ mod and is working very well. Sorry I have not been around, I have been busy working on other things. I pushed a scotts shop towel into the throttle body to see how much oil had accumulated. No matter what occ you are using you will not trap all the steam generated in crankcase that carries oil/water/fuel into the intake manifold. I did not witness any lines freezing on either the ball jar/ruien occ. I did notice a little freezing water at the bottom of the ruien occ during the winter and none on the ball jar during the winter months. I believe the cold air freezes the water in the ruien occ because it is mounted by the headlight. The ball jar is closer to the engines heat. Shop towel is torn in half and rolled up to swab through the open throttle body. Teaspoon of oil was drawn out with scotts shop towel.

    IMG_1675.JPG IMG_1676.JPG


    Cleaner rag up top was swabbed a seccond time to make sure im is clean.

    IMG_1679.JPG
     
  18. danlatu

    danlatu Senior Member

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    I have been really busy with other projects. Click on the order this printed. I have seen the quotes to have these printed and the prices are absurd. Or you can download the file and have a pubic library print one for free. If I had a 5k$ 3d printer I could make these from peek filament. Engine temps warp the filament I currently can print with my 300$ machine. I am going to politely decline future requests to print these. My main objective was to inform members here of the oil/water/fuel in the intake manifold, engine oil burning, fowling spark plugs, clogged piston rings, dirty valves, premature cat failure, bad mpg, blown head gasket problem the occ can remedy. I wanted to share my findings to help keep prii on the road and out of the shop.


    Screen Shot 2019-04-18 at 10.21.58 PM.png
     
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  19. danlatu

    danlatu Senior Member

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    A completely clogged pcv or occ would pop a dipstick or cause weak seals to leak oil. atp 205 reseal or high mileage engine oil will swell up rings to prevent leaks on valve seals, main, pulley, cam seals etc.
     
  20. danlatu

    danlatu Senior Member

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    Should not void warranty but check with service manager at dealer and get it in writing. it will not pass visual, carb does not know what they are doing. Burning oil vs catching it vs releasing it? I know it does not effect sniffer emissions testing. I have passed 5 times (MD). Sooner is better.
     
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