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300K milestone

Discussion in 'Gen 3 Prius Main Forum' started by Little_Bird, Oct 21, 2023.

  1. Little_Bird

    Little_Bird Junior Member

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    Just wanted to share the picture from last night, it reached 300K, it is on 2nd engine as of 200K and 2nd HV battery as of 186K. Coolant and inverter cooling fluid pumps replaced at 200K. Car located in the Arizona desert. Original original owner had it for first 200K in PXL_20231021_041559529.jpg LA.
     
    #1 Little_Bird, Oct 21, 2023
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  2. bisco

    bisco cookie crumbler

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    congrats! are we heading to 400k?
     
    #2 bisco, Oct 21, 2023
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  3. Siward

    Siward Active Member

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    congrats. Did you change the transmission fluid? Lots of people here recommend changing it, but I wonder if the service manual is correct and it is lifetime.
     
    #3 Siward, Oct 25, 2023
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  4. jdenenberg

    jdenenberg EE Professor

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    There is no such thing as a "lifetime" fluid unless you define a car's lifetime as 150,000 miles (as Toyota does). Back in the early days of the Gen2 Prius several early adopters did lab tests on Toyota WS transmission fluid and documented that the original fluid was contaminated with metallic particles due to the gears "lapping in" by 30 to 60 thousand miles. Once this transmission break-in period was over, The fluid was OK for about 90,000 miles according to the lab analysis, I was past of that group and documented lab tests on 4 transmission fluid refreshes every 60k miles in my 2004 Prius.

    JeffD
     
    #4 jdenenberg, Oct 25, 2023
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  5. Mendel Leisk

    Mendel Leisk Senior Member

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    The 2nd gen Repair Manual only describes a transaxle fluid level check. 3rd gen Repair Manual (and 4th) do have a transaxle fluid change instruction. None of the Repair Manuals ever stipulate service intervals, on anything; that's relegated to separate booklets or websites*. The word "lifetime" is never used. Basically they say nothing.

    * With the advent of 4th gen Toyota Canada provides no schedule in the booklet that used to have this info; you're stuck with a very clunky event-by-event interface on their website.

    @Little_Bird is this a Prius c, per your avatar? You've posted in gen 3.
     
    #4 Mendel Leisk, Oct 25, 2023
    Last edited: Oct 25, 2023
  6. bettergolf

    bettergolf Active Member

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    It is a lifetime fluid. Whenever the transmission fails....that was it's lifetime!
     
    #5 bettergolf, Oct 25, 2023
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  7. Little_Bird

    Little_Bird Junior Member

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    Yes, when I replaced the transmission fluid at 200K and then at 250K. Recently I did the radiator flush. New spark plugs were added to the used engine, it had 100K miles on it when it was put into this car at 200K miles.
     
    #6 Little_Bird, Oct 28, 2023
  8. Little_Bird

    Little_Bird Junior Member

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    No, it is a regular Prius two. I think the cheapest regular Prius trim.

     
    #7 Little_Bird, Nov 9, 2023
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  9. PriusHead05

    PriusHead05 Member

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    I do recommend changing it. The previous owner on my 2012 replaced it at 144k mi. and then I changed it again at 226k mi. There was a difference afterward. The car felt quicker and had more power. That's what I observed.
     
    #8 PriusHead05, Nov 27, 2023
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