You're about to drive an unfamiliar vehicle. What should you do if you think there may be moisture in the air-brake reservoir? You're about to drive an unfamiliar vehicle. What should you do if you think there may be moisture in the air-brake reservoir?

• Possible answers:

   
• A. Assume the system has automatic drain valves
• B. Find out whether you need to drain the system manually
• C. Nothing; it's the vehicle owner's responsibility
• D. Leave the engine running for a while before driving