Using your K&N air filter is easy. First, locate your vehicle's factory air box. Open it up and carefully remove the old air filter. Then, simply drop the K&N filter into the air box. Make sure it fits snugly and close the air box. That's it! For maintenance, it's recommended to clean the filter every 50,000 miles or as needed, depending on your driving conditions. To clean, use a K&N 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 K&N filter oil. Make sure to apply the oil evenly. As for storage, keep the filter in a clean, dry place. Also, always check for any signs of damage or excessive dirt. If you notice any issues, it might be time to clean or replace the filter.