UK Driver CPC Part 1 Theory Test

Why is it important to check the coolant level regularly on an HGV?

Coolant only affects the heater Low coolant can cause the engine to overheat, potentially causing catastrophic engine damage Coolant is purely cosmetic — it colours the radiator fluid Coolant levels only matter in winter

Correct Answer:

Low coolant can cause the engine to overheat, potentially causing catastrophic engine damage

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