Using your K&N air filter is easy. First, locate your vehicle's factory air box. Then, carefully remove the old air filter and place the K&N replacement filter in its spot. Make sure it fits snugly. As for maintenance, when you notice a drop in performance or the filter looks dirty, it's time to clean it. You can wash the filter with a mild cleaner and let it dry completely. After that, re - oil it following the instructions provided. Just a reminder, always check the filter periodically to ensure it's working at its best. And remember, this filter is built to last for your vehicle's whole life, so with proper care, you'll enjoy great performance for years to come.