Using your K&N air filter is a breeze. First, open your vehicle's factory air box. Take out the old air filter and carefully put in the K&N replacement filter. Make sure it fits snugly. As for maintenance, check the filter regularly for dirt and debris. When it gets dirty, you can wash it with K&N's filter cleaning kit. Just follow the instructions on the kit. After washing, let it dry completely and re - oil it using K&N's filter oil. Remember to keep the filter oil within the recommended levels. Also, always refer to your vehicle's manual and K&N's warranty terms during the whole process.