Private Pilot Private Exam

What could cause an abnormally high engine oil temperature indication?

1. The oil level being too high

2. The oil level being too low

3. The use of the incorrect oil type

4. Heavy engine load

The correct answer is: The oil level being too low

An abnormally high engine oil temperature indication can occur when the oil level is too low. When there is insufficient oil in the engine, it is unable to effectively absorb and dissipate heat. Oil plays a crucial role in lubricating and cooling the engine components, and a low oil level means less oil is available to perform these functions. As a result, the engine can overheat, leading to an increased oil temperature reading. Having a low oil level can mean that there is less coolant capacity, causing the engine to work harder and generating more heat, which may not be adequately managed without the proper amount of oil. The other factors listed, while they may affect engine performance in various ways, would not specifically lead to an elevated oil temperature in the same manner as having insufficient oil would. For instance, having the oil level too high can cause issues like foaming but typically would not directly cause high temperature readings.