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Water in cooling system

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by redprius2011, May 16, 2022.

  1. jzchen

    jzchen Newbie!

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    Definitely do not buy coolant from another country. Interestingly buying parts from your amayama.com and having it shipped from Japan has been cheaper than buying at our local USA Toyota dealers. Haven't really researched buying coolant/fluids outside the US. I still have red concentrate that I use in old and newer Toyota models in the household...

    REVVL V+ 5G ?
     
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  2. jzchen

    jzchen Newbie!

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    BTW- Tap water quality in countries outside the USA is drinkable water, here it is not considered advisable to drink without filtering. (Possible reason concentrated pink coolant is available in Japan vs USA).

    REVVL V+ 5G ?
     
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  3. Mr. F

    Mr. F Active Member

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    I wouldn't put much weight on that article, they seem to be mistaking distillation to be chemical process rather than a purely physical one. They also allege that distilled water has a net positive charge (how else would it "strip electrons from the metals in a cooling system"?), which is just false.

    When mixed with the correct proportion of coolant concentrate, there is nothing wrong with using distilled water in a car.
     
  4. rjparker

    rjparker Tu Humilde Sirviente

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    That article is really an ad for a particular manufacture's antifreeze treatment. I would totally dismiss that article.

    However, if you use Hy-per Lube Super Coolant, you don’t need to use softened water. Hy-per Lube Super Coolant contains molybdate, a form of the semi-precious metal “molybdenum,” which is proven to be extremely effective in preventing galvanic action and electrolysis – regardless of what type of water is used. Hy-Per Lube Super Coolant also contains polymer dispersants which keep water hardness in solution, thus preventing the formation of insulative scales and deposits.
     
    #24 rjparker, Aug 12, 2023
    Last edited: Aug 13, 2023
  5. jzchen

    jzchen Newbie!

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    Rislone doesn’t sell AntiFreeze. And if they did, I wouldn’t buy it! What do the antifreeze manufacturers recommend? What do they deem acceptable?