What procedure should be performed if metal particles are found in an engine's oil filter?

When metal particles are discovered in an engine's oil filter, performing a thorough engine examination is essential. This procedure is important because the presence of metal particles often indicates a potential failure or wear within the engine components. Such particles can be the result of abnormal friction between parts, suggesting that there could be serious issues like bearing failure, camshaft wear, or other mechanical failures.

Ignoring the particles or considering them as common can lead to catastrophic engine damage if the underlying problem is not addressed. Merely changing the oil and filter without investigating further might temporarily remove the particles but does not solve the root cause, which could lead to future issues. Continuing to operate the engine normally, despite finding metal particles, puts the entire system at risk, potentially resulting in a complete engine failure.

In summary, a thorough examination allows for the identification and rectification of issues before they escalate, ensuring safety and reliability in engine operation.