best antifreeze

Discussion in 'Geothermal Loops' started by Gary Wilson, Feb 6, 2020.

  1. Gary Wilson

    Gary Wilson New Member

    hello- waterfurnace price sheet says they have a 5 bucket minimum, I just need 15 gallons, can anyone point me in the right direction? And, what type is best? Some say mehanol. Thanks
  2. arkie6

    arkie6 Active Member Forum Leader

    I've heard of people using automotive windshield de-icer fluid in their loops. These generally use methanol as the de-icer.

    Prestone De-Icer Windshield Washer Fluid MSDS: de-icer.pdf

    Another place you might find methanol locally is at a farm tractor dealer / repair shop. They often use methanol added to water which is put in tractor tires to add ballast weight. The methanol is used to keep the water from freezing. These shops often have 55 gallon barrels of the stuff on hand and can easily provide a 5 gallon bucket of the stuff.
  3. docjenser

    docjenser Well-Known Member Industry Professional Forum Leader


    Hands down.
  4. SShaw

    SShaw Active Member Forum Leader

    You can buy 5-gal buckets of methanol on Amazon for $79.
  5. waterpirate

    waterpirate Well-Known Member Industry Professional Forum Leader

    Methanol is also used for racing. If you have a local speed shop, check with them for availability and pricing.

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