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DIY Windshield Wiper Fluid

Discussion in 'Gen 3 Prius Main Forum' started by ShihFa, Sep 3, 2024.

  1. ShihFa

    ShihFa Junior Member

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    Hello,

    Has anybody ever tried mixing their windshield wiper fluid? Has it worked well or caused any issues? Not so much considering it to save money, but because I have read that the stuff one buys is terrible for the environment.

    Thank you!
     
  2. Tombukt2

    Tombukt2 Senior Member

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    You can mix up all kinds of nonsense and spray it on your windshield oil might not be a good component to having that mix but ammonia window cleaner what do you want Dawn and something I mean I'm sure the environmentally friendly manufacturers method and all that must make glass cleaner that somewhat acceptable and so on this would be something to read on cleaning sites and environmentally friendly sites and look at some labels of window cleaner that's made by companies that are responsible like method and whoever see what their components are in them try it on your windshield and see if it's workable. The blue stuff the orange stuff from Rain-X and all that is bad for the environment eh well considering my jug has been full for about 5 years and almost never get squirted unless the wife is driving the car which is quite rarely so I never feel it and almost never use it when I clean off my windows it's usually done while I'm spraying off the car in the morning with the garden hose so as always that old cars don't need to have a lot of time spent on them cleaning and washing that's why I drive them people expect an old car to be well not as clean as a new car.
     
  3. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I make my own, in a jug that previously held the storebought stuff- so about one gallon at a time. Water, a couple of drops of Dawn or similar dishwashing liquid (really, just a couple drops!) and some isopropyl alcohol to prevent freezing.

    5 parts water to 1 part alcohol is about right for any temperature we'll get in a mid-Atlantic winter. You could probably get away with less or even none.

    I use distilled water since my well supply has a lot of minerals in it.
     
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  4. ForestBeekeeper

    ForestBeekeeper Active Member

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    Here in Maine folks tend to mix water and antifreeze 50/50 maybe with a little dish soap.
     
  5. Mendel Leisk

    Mendel Leisk EGR Fanatic

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  6. ForestBeekeeper

    ForestBeekeeper Active Member

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    I did not mean to say that anyone should drink it.

    Definitely do not drink it!
     
  7. MAX2

    MAX2 Member

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    Ingredients:
    1 gallon of clean water
    1 fl.oz of 10% aqueous ammonia solution (NH3)
    3 fl.oz of 96% alcohol (Ethyl Alcohol (Ethanol))
    1 (one) drop of dishwashing detergent
     
    #7 MAX2, Sep 4, 2024
    Last edited: Sep 4, 2024
  8. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Ethyl alcohol, Ever Clear for example?
     
  9. MAX2

    MAX2 Member

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    Ok.
     
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  10. ShihFa

    ShihFa Junior Member

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    Do you know where I can buy 10% aqueous ammonia solution? Did a simple search engine search and nothing came up.
     
  11. MAX2

    MAX2 Member

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  12. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    What’s the ammonia concentration of laundry ammonia, the stuff readily available in grocery stores?
     
  13. MAX2

    MAX2 Member

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    The concentration of ammonia in household ammonia varies, but is usually around 5 to 10 percent.
    The main thing is not to use it internally. It is not Alcohol!
    Although with such a sharp smell of ammonia, it is unlikely that anyone would want to take it internally))
     
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  14. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    In Canada Toyota dealerships sell attached:
     

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    #14 Mendel Leisk, Sep 5, 2024
    Last edited: Sep 5, 2024
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  15. MAX2

    MAX2 Member

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    Suitable for severe winter use.
    It should contain a lot of alcohol or some special antifreeze.
     
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  16. fuzzy1

    fuzzy1 Senior Member

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    For those temperatures, it needs to be at least 50% methanol, by volume. Needed only inland, not along the coast.

    For my region, they sell mostly the -20F stuff, which needs to be 30% 40% methanol.

    https://www.methanol.org/wp-content/uploads/2016/06/FreezingPointsMethanol-WaterSolutions.pdf

    EDIT: -20F needs 40%, not 30% methanol. I read the wrong axis last night.
     
    #16 fuzzy1, Sep 6, 2024
    Last edited: Sep 6, 2024
  17. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Funny thing, I'll see it freeze up on windshield, just around zero. Maybe wind chill in action. Or I'm getting short-changed. :confused:

    I use it year 'round, rarely if ever activate the washer jets, any other season than winter, so don't want to be dealing with left-over summer fluid.