Changing a car's oil filter is another relatively simple task that can help keep your engine running smoothly. Here are the steps to follow:

1. Locate the oil filter: The oil filter is typically located on the side or underside of the engine, and it looks like a cylinder with a threaded base.
2. Drain the oil: To avoid making a mess, you should drain the oil from the engine before removing the filter. You can either use a specialized oil drain pan or place a regular pan under the oil filter to catch any oil.
3. Remove the old filter: Use a wrench or oil filter removal tool to unscrew the old filter. Be careful not to damage the filter or spill any oil.
4. Prepare the new filter: Before installing the new filter, apply a small amount of oil to the rubber gasket to help create a good seal.
5. Install the new filter: Screw the new filter onto the engine by hand, ensuring that it's snug but not over-tightened. Check the filter instructions for the recommended torque settings.
6. Refill the engine with oil: Use a funnel to refill the engine with fresh oil of the recommended viscosity and quantity. Check the dipstick to ensure that the oil level is correct.
7. Start the engine: After replacing the oil filter and refilling the engine with oil, start the engine and let it run for a few minutes to circulate the new oil. Check for any leaks or other issues.It's vital to change your car's oil filter regularly, typically every time you change the oil. This will help keep your engine clean and functioning well.