Practice question

Why is using the correct coolant type and concentration important in a school bus heating/cooling system?

  1. Wrong coolant or weak mix causes corrosion, reduced freeze/boil protection, and heater core/water pump damage
  2. Coolant type only affects color
  3. Any water alone is fine year-round
  4. Coolant has no effect on heater performance

Answer: A — Wrong coolant or weak mix causes corrosion, reduced freeze/boil protection, and heater core/water pump damage

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