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Does Toyota Genuine Tranmission Fluid/Coolant Expire?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Siward, Aug 1, 2017.

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  1. Siward

    Siward Active Member

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    Does Toyota Genuine ATF or Coolant expire? I am thinking of stocking up on the fluid for my 2012 Prius when I am in the United States. However, I don't plan to use it until 1.5 years later.

    Does the fluid expire? Or is it a bad idea to shelf the jugs for over a year?
     
    #1 Siward, Aug 1, 2017
    Last edited: Aug 1, 2017
  2. tankyuong

    tankyuong Senior Member

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    should be ok
     
    #2 tankyuong, Aug 1, 2017
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  3. Mendel Leisk

    Mendel Leisk Senior Member

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    I've got a ~3 year old bottle of the coolant, never even occurred to me it could get old. It's good for 10 years in the car.
     
    #3 Mendel Leisk, Aug 1, 2017
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  4. David Beale

    David Beale Senior Member

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    Coolant starts to "degrade" the moment it's made, according to my friend who used to make it at Dow. I suspect it will last longer in the bottle than in the car, and it's good for a long time in the car, as Mendel says. So a year or two shouldn't be a problem.
     
    #4 David Beale, Aug 2, 2017
  5. bisco

    bisco cookie crumbler

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    if it did, i would think there would be a warning on the bottle.
     
    #5 bisco, Aug 2, 2017
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah, and expiration date.

    Transmission fluid might be a little more prone to getting old, but who knows.

    Why not just buy stuff as you need it, in particular with the transaxle fluid? At most you'll have a 1/2 quart kicking around for a few years.
     
    #6 Mendel Leisk, Aug 2, 2017
  7. NutzAboutBolts

    NutzAboutBolts Senior Member

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    Using it in 1.5 years is still good, not sure about the expiration date :ROFLMAO:
     
    #7 NutzAboutBolts, Aug 2, 2017
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