Oil change services involve replacing the old engine oil in a vehicle with fresh oil to ensure optimal engine performance. This process typically includes draining the used oil, replacing the oil filter, and adding new oil that meets the manufacturer's specifications. Regular oil changes help maintain engine health and can improve fuel efficiency. Most automotive service centers offer oil change services, and they often recommend changing the oil every 3,000 to 7,500 miles, depending on the type of oil used and the vehicle's make and model. Keeping up with oil changes can extend the life of the engine and prevent costly repairs.