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Car fluids and coolant

Do "Super Coolants" Lower Engine Temperature By 30 Degrees?

Mar 2025 · 18 min · 11 products tested

His winner

Red Line Supercool

It had the best average finish across the tested categories

  1. 1stRed Line Supercool
  2. 2ndLiquid Chill
Watch on YouTube

Results, round by round

Reserve Alkalinity (pH after acid)

Higher is better, in pH9 of 11 products have agreed numbers, so no leader is marked
  1. 1Evans Waterless7.9pHAmazon
  2. 2Liquid Chill6.9pHAmazon
  3. 3Red Line Supercool6.87pHAmazon
  4. 4Royal Purple6.51pHAmazon
  5. 5VP Racing Additive6.44pHAmazon
  6. 6Engine Ice6.44pHAmazon
  7. 7DEI Relief6.42pHAmazon
  8. 8Rislone Hyper Cool6.39pHAmazon
  9. 9VP Racing Stay Frosty5.84pHAmazon

Boiling Point

Higher is better, in °F4 of 11 products have agreed numbers, so no leader is marked
  1. 1Evans Waterless388°FAmazon
  2. 2Rislone Hyper Cool233.36°FAmazon
  3. 3Red Line Supercool229°FAmazon
  4. 4Liquid Chill223.5°FAmazon

Lubricity (Wear Scar)

Lower is better, in mm7 of 11 products have agreed numbers, so no leader is marked
  1. 1Liquid Chill6.09mmAmazon
  2. 2Red Line Supercool6.1mmAmazon
  3. 3VP Racing Additive6.4mmAmazon
  4. 4Royal Purple6.4mmAmazon
  5. 5Rislone Hyper Cool6.42mmAmazon
  6. 6DEI Relief6.48mmAmazon
  7. 7Engine Ice6.49mmAmazon

Heat Exchange (Cumulative Temp Difference)

Higher is better, in °F7 of 11 products have agreed numbers, so no leader is marked
  1. 1VP Racing Stay Frosty19°FAmazon
  2. 2Liquid Chill17.5°FAmazon
  3. 3Red Line Supercool17.1°FAmazon
  4. 4Engine Ice16.2°FAmazon
  5. 5VP Racing Additive15.5°FAmazon
  6. 6Royal Purple15.2°FAmazon
  7. 7Rislone Hyper Cool14.4°FAmazon

Everything he tested

Results were read from the video's captions by two AI models, and only the numbers both agree on and that he says out loud are shown. Some results appear only on screen in the video. Check the video before you buy.