A car oil change is the process of draining old engine oil from a vehicle and replacing it with new oil. This is a crucial maintenance task that helps keep the engine lubricated, reduces wear and tear, and ensures optimal performance.

Key Steps in an Oil Change:

1. Drain Old Oil: The old oil is drained from the engine using a drain plug, usually located at the bottom of the oil pan.
2. Replace Oil Filter: The oil filter, which traps contaminants, is typically replaced to ensure clean oil flows through the engine.
3. Add New Oil: Fresh oil is poured into the engine through the oil filler cap, ensuring the right type and amount specified by the manufacturer.
4. Check Levels: The oil level is checked using the dipstick to ensure it’s at the correct level.
5. Dispose of Old Oil: The old oil and filter must be disposed of properly, as they can be harmful to the environment.

Regular oil changes are essential for engine longevity and performance, typically recommended every 3,000 to 7,500 miles, depending on the vehicle and oil type.