Using your K&N air filter is easy. First, make sure your engine is cool. Then, open the factory air box and remove the old air filter. Place the K&N filter in the same position as the old one and close the air box. It's that simple! As for maintenance, check the filter regularly. You can tell it needs cleaning when it looks dirty or when you notice a drop in performance. To clean, use K&N's filter cleaning kit. Spray the cleaner on the filter, let it soak for a few minutes, then rinse it gently with water. Let it dry completely before applying the filter oil. Be careful not to over - oil the filter. Also, always follow the safety instructions in your vehicle's manual when working on the engine. With proper use and maintenance, your K&N air filter will serve you well for the life of your vehicle.