Deionized or Distilled water in a cooling system?

Coolant of choice

  • Straight Water

    Votes: 0 0.0%

  • Total voters
  • Poll closed .
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G-Body Guru
Sep 7, 2010
Acton Vale, Quebec, Canada
Most new cars now just specify clean tap water for their coolant mix. The most important thing I beleive is simply proper maintenance of the liquid, ie regular coolant should be replaced every 3 years and long life every 5 years. The problems I see are from coolant that's 10-12 years old still in the rad just because it tests to a -40 freezing point.
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