What are the risks associated with oil contamination in an aircraft engine?

Oil contamination in an aircraft engine poses significant risks primarily due to its effects on engine performance and longevity. Contaminated oil can lead to overheating, as the oil loses its ability to effectively lubricate engine components. Proper lubrication is essential for reducing friction, and without it, engine parts can overheat, leading to accelerated wear over time.

Additionally, the presence of contaminants can lead to the formation of sludge or deposits within the engine, which can obstruct oil passages and further degrade the oil's effectiveness. This can eventually result in critical engine components failing to receive adequate lubrication, increasing the likelihood of catastrophic engine failure.

Notably, while overheating and accelerated wear can lead to prolonged maintenance needs and reduced engine efficiency, the most severe risk associated with oil contamination is the potential for total engine failure, which can have dire consequences during flight operations.