Using your K&N air filter is a breeze. First, locate your vehicle's factory air box. Open it up and remove the old air filter. Then, simply drop in the K&N replacement filter. Make sure it fits snugly and close the air box. As for maintenance, when you notice a drop in performance or the filter looks dirty, it's time to clean it. Wash the filter gently with a mild cleaner and warm water. Let it dry completely, then re - oil it using K&N filter oil. When handling the filter, be careful not to damage the cotton media. Also, always follow the instructions on the cleaner and oil products. With proper care, your K&N air filter will serve you well for the life of your vehicle.