Why is oil filter used in a vehicle?

An oil filter is used in a vehicle to remove contaminants and impurities from the engine oil, ensuring that the oil remains clean and effective in lubricating engine components. By trapping dirt, metal particles, and sludge, the oil filter helps maintain optimal engine performance and longevity. Regularly changing the oil filter is crucial as a clogged filter can restrict oil flow, leading to increased wear and potential engine damage.