How does the aircraft's oil system ensure effective cooling?

The aircraft's oil system ensures effective cooling primarily by using an oil cooler. An oil cooler is a heat exchanger that allows the engine oil, which absorbs heat as it circulates through the engine, to pass through a cooling unit before returning to the engine. This process effectively removes excess heat from the oil, maintaining optimal operating temperatures. As the oil is cooled, it retains its viscosity and lubricating properties, which are crucial for engine longevity and performance.

While other aspects of the oil system, such as circulation and pressure changes, contribute to overall oil system functionality, they do not specifically focus on the cooling aspect. Circulation is essential for distributing the oil throughout the engine, and pressure changes relate to the system's ability to maintain oil flow under varying conditions. However, the direct mechanism for cooling the oil is primarily achieved through the use of the oil cooler.