Which temperature range is lube oil maintained at on an operating main engine?

Which temperature range is lube oil maintained at on an operating main engine?

• A. 100°-110°F
• B. 110°-120°F
• C. 120°-130°F
• D. 130°-140°F

Answer: (C)

Lube oil in an operating main engine is maintained within the temperature range of 120°-130°F to ensure optimal performance and lubrication. This temperature range is crucial as it promotes proper viscosity, allowing the oil to flow effectively and provide adequate lubrication to moving parts. Maintaining lube oil within this range aids in minimizing wear and tear on engine components, enhances thermal stability, and reduces the risk of oil breakdown. When lube oil is too cold, it becomes more viscous, which can lead to inadequate lubrication, increasing friction and wear. Conversely, if the oil temperature is too high, it can lose its lubricating properties, create vapor, and even lead to engine damage due to overheating. The 120°-130°F range strikes a balance, ensuring that the oil remains effective while supporting safe engine operation.

Lube oil in an operating main engine is maintained within the temperature range of 120°-130°F to ensure optimal performance and lubrication. This temperature range is crucial as it promotes proper viscosity, allowing the oil to flow effectively and provide adequate lubrication to moving parts. Maintaining lube oil within this range aids in minimizing wear and tear on engine components, enhances thermal stability, and reduces the risk of oil breakdown.

When lube oil is too cold, it becomes more viscous, which can lead to inadequate lubrication, increasing friction and wear. Conversely, if the oil temperature is too high, it can lose its lubricating properties, create vapor, and even lead to engine damage due to overheating. The 120°-130°F range strikes a balance, ensuring that the oil remains effective while supporting safe engine operation.