Which factor would NOT affect the pressure of lube oil in a system?

Study for the USCG Third Assistant Engineer (3/AE) Test. Prepare with flashcards and multiple-choice questions, each with hints and explanations. Get ready for your exam!

The pressure of lube oil in a system is influenced by several factors, while water dilution does not play a direct role in determining that pressure.

Lube oil pressure is generally a result of the properties of the oil and the efficiency of the system components. Air temperature can affect the density and viscosity of the oil; higher temperatures typically decrease oil viscosity, which can lead to reduced pressure. The viscosity of the oil itself is crucial because it directly impacts how easily the oil flows through the system. Lower viscosity oils will flow more easily, potentially increasing pressure. Similarly, the efficiency of the oil pump is vital; a more efficient pump can maintain higher pressure within the lubrication system.

Water dilution may reduce the lubricating properties of the oil and could lead to other issues such as contamination or degradation, but it does not directly affect the physical pressure of the oil in the system. Consequently, out of the given options, water dilution is the factor that does not impact lube oil pressure directly.

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