Self proclaimed expert explains why Prius Headgasket Failures are normal, early, and inevitable

Discussion in 'Gen 3 Prius Main Forum' started by Sal43, Oct 21, 2020.

  1. Rocky Mountain Priusman

    Rocky Mountain Priusman Active Member

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    This thread makes me want to put KIRKLAND brand extra virgin olive oil mixed with canola oil in my engine the next time I change it. How can it be much different than Toyota 0w-20?
     
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  2. Tim Jones

    Tim Jones Senior Member

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    It will be better.
     
  3. OptimusPriustus

    OptimusPriustus Active Member

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    It could clean the rings, one never know:D

    i actually had one of those wonders happen once. Had 20years old Corolla which had been running on mineral oils all her life. For some reason i put fully synthetic Mobil in and it started consuming oil. With mineral oil hardly any consumption. I just kept on driving and after second oil change the oil consumption stopped. I was really confused until a friend of mine told me ”your rings are now clean. you’re free now”:D:ROFLMAO: True story
     
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  4. ASRDogman

    ASRDogman Senior Member

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    I got some prime waterfront property in south Florida to sell you. For a really great price....
     
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  5. Mendel Leisk

    Mendel Leisk Witness Leader

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    Yeah, my money's on Toyota 0W20. :)
     
  6. mjoo

    mjoo Senior Member

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    Diesels routinely run lean and not incur real mechanical problems. I've not heard of a diesel with an aluminum cylinder head. They also don't have throttles.

    Gasoline engines are more sensitive to lean conditions IMHO.

    moto g power ?
     
  7. Mdv55

    Mdv55 Active Member

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    GMs Duramax has had aluminum heads since it was introduced in 2001. The new 3.0l diesel for 2020 also has an aluminum block.
     
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  8. Rocky Mountain Priusman

    Rocky Mountain Priusman Active Member

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    If you dislike your prius so much and doubt its reliability, why dont you sell it for another vehicle you like more, and why are you spending time on a Prius chat forum? Or is it a love/hate relationship?
     
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  9. OptimusPriustus

    OptimusPriustus Active Member

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    i think aluminum diesels are quite common nowadays. I’ve had at least two with such. One had went through head job at around 100kkm:) Bad lifters
     
  10. Tim Jones

    Tim Jones Senior Member

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    Because I can......and I have 5 vehicles.
    I'm on here because of misinformed people like you.
    Why even reply to or post something from me.
    I know more about the 3rd Gen than you ever will.
     
  11. Mdv55

    Mdv55 Active Member

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    Ecodiesel?
     
  12. DieselHammer

    DieselHammer Junior Member

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    Wow! Why the bitterness?
     
  13. vvillovv

    vvillovv Senior Member

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    One Gasket Masters video wouldn't tell the full prius head gasket story.
    Here's an older GM video showing what happens after driving long enough after the head gasket starts leaking
    youtu.be/8U1rs3bI-HA
    Finding the GM video where they replace a prius head gasket in the taxi yard somewhere around the bay area will give a few more clues as to what some of the possible causes of the Gen 3 head gasket issue is really about.
     
  14. V Sport Wagon

    V Sport Wagon Active Member

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    :rolleyes:
     
  15. douglasjre

    douglasjre Senior Member

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    I've never had glitter in any of the eCVTs that I have changed fluid from. Wonder why you get glitter?
     
  16. V Sport Wagon

    V Sport Wagon Active Member

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    Because he's just such a ray of sunshine and positivity in all his posts, it's natural even his car would glimmer.
     
  17. CR94

    CR94 Senior Member

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    No, as has become more clear relatively recently, it's more because the engineer who set up the water pump control programming forgot part of what he should've learned in Heat Transfer class.
     
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  18. rjparker

    rjparker Tu Humilde Sirviente

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    Thermal cycling contributes which is demonstrable (40-50f after initial warmup) and is what GM said in the video. However carbon buildup from oil consumption and a bad pcv and egr design are also factors.

    Any engine can blow a head gasket if frequently overheated.

    Thermal cycling is not a factor in similar Corolla engines but the other factors remain. Corollas don’t have anything close to the problem.
     
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  19. Mendel Leisk

    Mendel Leisk Witness Leader

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    Strike out that bit and I'll go along with you.

     
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  20. black_jmyntrn

    black_jmyntrn Senior Member

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    would my logic be wrong that a non v with the V cooling which has been enlarged to hold more coolant effectively keep the motor cooler by having additional fluid circulating?