Try a Practice LORRY Theory Test Question (32 of 104)
Q: You're about to drive an unfamiliar vehicle. What should you do if you think there may be moisture in the air-brake reservoir?
A:
Assume the system has automatic drain valves
A:
Find out whether you need to drain the system manually
A:
Nothing; it's the vehicle owner's responsibility
A:
Leave the engine running for a while before driving
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