Driving licence test

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What does a coolant consist of?

  • Correct: Water and glycol.
  • Incorrect: Distilled water.
  • Incorrect: Distilled water and oil.
  • Incorrect: Water and hydraulic fluid.

The coolant consists of glycol and water.” (Driving Licence Book, 19th Edition, page 140)

The glycol protects from rust and prevents the coolant from freezing in winter.


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