General Subjects (Auxiliaries & Systems) USCG Question #1626 (Set 25)

With a machinery lubricating oil analysis program, it is important to monitor trends over time. What would be indicated by a sudden increase in metallic content of a recent sample of used diesel engine crankcase lubricating oil?

Official USCG Answer & Rule Citation

Correct Answer: Option C — Increased wear rates of engine parts.

Under USCG National Maritime Center examination standards, the accepted correct answer is: Increased wear rates of engine parts..

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