How do I Add Alcohol to an HHO Generator?

Written by marlon trotsky
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How do I Add Alcohol to an HHO Generator?
As freezing temperatures approach, start adding the winter mix to your hydrogenerator. (Classic Car Engine Refurbished image by Janet Wall from

A hydrogenerator, also known as an HHO generator, helps increase your car's gas mileage and horsepower while reducing total emissions. Once installed in your car, a hydrogenerator's dry-cell generators produce significant amounts of HHO gas, a type of hydrogen fuel. This is the case for both diesel and gasoline engines in cars, trucks, tractors and other vehicles. Many owners add a mixture including denatured alcohol to their hydrogenerators to prevent them from freezing in the winter.

Skill level:

Things you need

  • Safety gear

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  1. 1

    Set up in a well-ventilated area. Purchase denatured alcohol in the paint department of most lumber and hardware stores. Wear eye protection, long sleeves, gloves and other safety equipment.

  2. 2

    Mix the denatured or isopropyl alcohol, .142gr. of sodium hydroxide (NaOH) and 1 gallon of distilled water in an open plastic container, then let the winter mix sit for about 20 minutes. Always pour the water in first, then add the sodium hydroxide. The percentage of alcohol typically ranges from 5 per cent (about 227gr. per gallon) to 20 per cent (approximately 794gr. per gallon), which in turn will protect your hydrogenerator from temperatures ranging from 10 degree to -3.89 degrees Celsius, respectively.

  3. 3

    Transfer the mixture to a closed container after the initial warming reaction passes: Unscrew the hydrogenerator's filler cap, and pour in the winter mix. Tighten the cap to prevent any leaks.

Tips and warnings

  • You can use food-quality potassium hydroxide (KOH) as a substitute for sodium hydroxide.
  • Never use antifreeze in your winter mix, or you could run the risk of clogging the HHO-generating dry cells.

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