Using your K&N air filter is simple. First, open your vehicle's factory air box. Carefully remove the old air filter and place the K&N replacement filter in its spot. Make sure it fits snugly and close the air box. When it comes to maintenance, you'll know it's time to clean the filter when it looks dirty. You can wash the filter with K&N's recommended cleaning solution. Rinse it gently and let it dry completely. Then, re - oil the filter using K&N filter oil. For best results, follow the oiling instructions on the product. Keep in mind that these filters are designed to last a long time, but regular checks are still a good idea. Also, always use genuine K&N cleaning and oiling products to maintain the filter's performance and warranty.