Changing the car oil is crucial for maintaining its performance and longevity. Regular oil changes help keep the engine clean and lubricated, reducing friction and preventing wear and tear. This is the number one maintenance task because it ensures efficient engine operation and prevents costly engine damage. Fresh oil also improves fuel efficiency, so you save money on gas. Additionally, oil changes provide an opportunity to identify other potential issues, such as leaks or worn-out parts, before they become major problems. Neglecting oil changes can lead to engine overheating, decreased performance, and even engine failure. Therefore, it's important to adhere to the recommended oil change intervals specified in your car's manual. Taking care of this essential maintenance task will keep your car running smoothly and extend its lifespan.