Does a car need an oil change once a year?

[LeNatalie]

An annual oil change is necessary for cars, and the steps for replacement are as follows: 1. Lift the car, remove the undercover, and place a container of about 10 liters under the oil drain plug; 2. Loosen the oil drain plug, use an air gun to blow for two minutes at the oil filler port, tighten the drain plug after draining, and wipe it with a tissue to check for oil leaks; 3. Reinstall the undercover and lower the car, then use a funnel to add oil to the standard level at the oil filler port. Precautions for oil change: 1. Perform the change when the engine is warm to ensure the old oil is thoroughly drained; 2. Add oil and ensure the amount is appropriate; 3. After adding oil, start the engine and check all components for any oil leaks.