Practice question

What is the main function of engine coolant (anti-freeze mixed with water) in a motor vehicle?

  1. To lubricate the pistons and crankshaft
  2. To absorb engine heat and prevent the engine from overheating or freezing
  3. To improve the octane rating of the fuel
  4. To clean the windshield glass

Answer: B — To absorb engine heat and prevent the engine from overheating or freezing

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