A cloudy or milky appearing lube oil sample, taken from the main lubricating oil system could be caused by __________.
Official USCG Answer & Rule Citation
Correct Answer: Option D — excessive gland sealing steam
Excessive gland sealing steam leaks past turbine labyrinth packings into the bearing housings, condensing into the oil and creating a cloudy, milky emulsion indicative of severe water contamination.
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