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How To Check Your Coolant Mixture Percentage

From Matthew Wright,
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Coolant Mixture Testing - Test Your Antifreeze - Do You Have Enough Coolant Mixe

Coolant / antifreeze mixture tester shown.
An inexpensive coolant mixture tester works fine.
photo by Matt Wright, 2008
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Keeping a proper coolant mixture is vital to your car's health. Antifreeze should be close to a 50 percent mixture, depending on your climate and driving conditions. But how are you supposed to know whether your coolant mixture is right for you and your car? You can test your coolant mixture easily with an inexpensive coolant mixture tester that can be bought at any auto parts store.

Remember, never try to remove your radiator or coolant reservoir cap while the engine is hot. The coolant is very hot and under high pressure, which can burn you badly.

  1. Coolant Mixture Testing - Test Your Antifreeze - Do You Have Enough Coolant Mixe
  2. Taking the Coolant Sample
  3. Reading the Results

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