Head gasket?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Willie Walker, Dec 31, 2025.

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  1. Willie Walker

    Willie Walker New Member

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    Thank you for kindness. As of right now running strong. Ac not working any more so I think the high voltage fuse is bad in the inverter.
     
    #21 Willie Walker, Jan 20, 2026
  2. Willie Walker

    Willie Walker New Member

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    Hello I have 2000 miles on the engine I replaced head gasket still no coolant loss. Do you think I am out of the woods or could it still fail? Thanks
     
    #22 Willie Walker, Feb 18, 2026 at 7:15 PM
  3. rjparker

    rjparker Tu Humilde Sirviente

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    Good sign. How is your oil consumption on this engine?
     
    #23 rjparker, Feb 18, 2026 at 8:45 PM
  4. Willie Walker

    Willie Walker New Member

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    It has been on full mark each time I checked it but this morning it was like 3/8 inch down from full point. In the catch can I do keep getting like that beige mayonnaise consistency stuff. I really would love to at least get 300,000 miles out of it. I’m at 259,000 now. I have a brand new set of tires to go on that I got for like $300 low roll resistance that I usually put on it.
     
    #24 Willie Walker, Feb 19, 2026 at 9:24 AM
  5. Willie Walker

    Willie Walker New Member

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    I correct myself it was a quarter inch down. I had to go back and look at what a quarter inch wants to make sure.
     
    #25 Willie Walker, Feb 19, 2026 at 9:38 AM
  6. Eddie25

    Eddie25 Active Member

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    Random opinion:

    I wouldn't particularly worry about what's showing up in the catch can, just stay on top of emptying it. Oil and coolant levels are really what you want to be concerned about. Just keep an eye on them.

    As far as oil burning I would just live with it unless it was over a quart every 3k miles. Mine got way worse than that but a quick B12 piston soak I did two years ago completely solved it to this day. I wouldn't believe it myself if it didn't happen to me.
     
    #26 Eddie25, Feb 19, 2026 at 10:35 AM
  7. Willie Walker

    Willie Walker New Member

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    wow I never heard of a B12 piston soak /I can see it now. Don’t know something like that can make that big of a difference. I’ll give that a shot. Thank you so much for your advice. Will do:)
     
    #27 Willie Walker, Feb 19, 2026 at 10:59 AM
  8. PriusCamper

    PriusCamper Senior Member

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    If you aren't losing coolant then you fixed it!
     
    #28 PriusCamper, Feb 19, 2026 at 3:54 PM
  9. Eddie25

    Eddie25 Active Member

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    Like I said, I wouldn't worry about it until you have confirmed it's bad. Best bet for now is just getting data and waiting.
     
    #29 Eddie25, Feb 19, 2026 at 3:55 PM
  10. PriusCamper

    PriusCamper Senior Member

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    Agreed... PIston soaks are once you exhaust all the other options because it can cause a small amount of damage to seals, gaskets and other non-metal parts.
     
    #30 PriusCamper, Feb 19, 2026 at 3:59 PM
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