Using your K&N air filter is easy. First, open your vehicle's factory air box. Take out the old air filter and simply drop in the K&N replacement filter. Make sure it fits snugly. When it comes to maintenance, you don't need to replace it often. Instead, when it gets dirty, you can wash it. Use a mild soap and water solution to gently clean the filter. Rinse it thoroughly and let it dry completely. Then, re - oil the filter using K&N filter oil. As for storage, keep it in a dry place away from direct sunlight. Remember, this filter is built to last, but following these steps will ensure it keeps performing at its best for a long time.