How does an engine oil filter work?

The engine oil filter plays a vital role in maintaining the health and performance of an engine. Its primary function is to remove contaminants and impurities from the engine oil as it circulates through the engine.

The engine oil filter consists of a housing that contains a filter element made of various materials, such as cellulose, synthetic fibers, or a combination of both. The filter element is designed with microscopic pores that allow the oil to flow through while capturing particles and debris that can be harmful to the engine.

When the engine is running, the oil pump draws oil from the oil pan and sends it under pressure to various engine components, such as the crankshaft, camshaft, and bearings. Before the oil reaches these critical components, it passes through the oil filter. As the oil flows through the filter element, the contaminants and impurities are trapped by the filter media, preventing them from circulating further in the engine.