CDL · Night and weather
What is true about an overheated engine and its cooling system?
Correct answer: A pressurized cooling system must cool down before its radiator cap is removed.
Answer options
- AIf you are within 30 miles of your destination, you can finish the trip before checking it.
- BA pressurized cooling system must cool down before its radiator cap is removed. Correct
- CCoolant levels matter only in summer and can be skipped in winter checks.
Why
A pressurized cooling system holds steam and scalding coolant that can spray out and cause severe burns, so leave the cap alone until everything has cooled. If the engine overheats, stop as soon as it is safe instead of pushing on, and keep coolant at the proper level in every season.
About this question
Topic: Night and weather License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
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This question is part of CDL Practice Exam (50 questions). Take the full set and check your score.
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