What condition may arise if regular oil changes are not performed?

The formation of sludge is a condition that can arise when regular oil changes are not performed. Over time, engine oil breaks down due to heat, friction, and contaminant exposure. As this degradation occurs, the oil can become less effective at lubricating engine components, leading to the accumulation of particulate matter and other debris within the oil. This buildup combines with the remaining oil, resulting in sludge, a thick, sticky substance that can impede oil flow and cause severe engine issues.

Sludge can clog oil passages, reducing oil circulation and inhibiting proper cooling and lubrication. This condition can dramatically affect engine performance, leading to increased wear on engine components and potentially resulting in catastrophic engine failure if not addressed.

While other conditions like engine overheating and oil thinning can also be consequences of neglected maintenance, the formation of sludge specifically points to the direct impact of extending the interval between oil changes. Regularly changing the oil helps to remove contaminants and ensure smoother operation of the engine, helping to prevent the formation of sludge and maintain optimal engine health.