Revision question · Vehicle condition

Why should you use an approved coolant solution in your engine's cooling system?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

To protect the coolant from freezing

For easier starting from cold

To prevent the air tank from freezing

For effective cab heating

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To protect the coolant from freezingThis was the right answer

Coolant solution is also known as anti-freeze. It provides protection from freezing and also contains a corrosion inhibitor that prolongs the life of the cooling system. Remember to check the coolant level regularly.

Reviewed reading for this question

Use the approved coolant throughout the yearReviewed guidance summary · The source describes the coolant’s chemical protection, not cab heating or brake-air treatment.

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