In Serbian vehicle safety and regulations, what critical safety precaution must be taken before opening the coolant expansion reservoir cap on a hot engine?
Answer and explanation
Correct answer: C. Allow engine to cool down thoroughly before opening
- Step 1: Pressurized hot coolant boils instantly when opened hot, spraying scalding steam and liquid that cause terrible burns. Answer: Allow engine to cool down thoroughly before opening. Why not the others: the alternative options do not represent statutory provisions under Serbian vehicle safety and technical regulations.
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