Oil filter plays a central role in providing clean supply of oil to different parts of the engine for smooth running, and reducing the effects of wear and tear. It reduces friction so that metal components may press against each other without damaging the components.
With the oil continuously being pumped throughout the engine, it collects residue and other particles that may contaminate the oil over time. The oil filter cleans the oil every time it passes through the filter by collecting these residue and particles, to ensure that the oil is “clean” for its next cycle across the engine.