What is the continuous operation range for engine oil temperature?

• A. 0 to 100 °C
• B. 10 to 110 °C
• C. 10 to 115 °C
• D. 20 to 120 °C

Answer: (C)

The correct range for continuous operation of engine oil temperature is 10 to 115 °C. This specification is critical for ensuring optimal engine performance and longevity, as operating outside of these temperature parameters can lead to reduced lubrication effectiveness, increased wear, and potential engine damage.

Maintaining oil within this range ensures that it performs its essential functions, such as reducing friction and dissipating heat. Operating at temperatures significantly above this range may indicate that the engine is experiencing excessive heat, which could result in oil breakdown and loss of protective properties. Conversely, temperatures below this minimum threshold can lead to improper lubrication, impacting the engine's efficiency and reliability.

Understanding the importance of monitoring engine oil temperature and maintaining it within the specified continuous operation range is vital for safe flight operations and ensuring the longevity of the aircraft's engine.