Replacement of the Air Filter
A clean air filter improves airflow to the engine and improves fuel efficiency. To keep your engine running smoothly, check your air filter regularly and replace it according to your vehicle’s maintenance schedule. 4. Oil system maintenance
A clean oil system will keep your engine running smoothly. Consider using fuel additives regularly to clean your injectors to keep them working properly. If you notice a drop in oil quality, you need to flush the oil system.