Using your K&N air filter is easy. First, open your vehicle's factory air box. Then, take out the old air filter and drop in the new K&N filter. Make sure it fits snugly. That's it! You're ready to go. As for maintenance, keep an eye on the filter's dirt level. When it gets dirty, you can wash it. Use a K&N filter cleaning kit, follow the instructions on the kit, and let the filter dry completely before re - oiling it. After oiling, it's ready to be reinstalled. Remember, don't use any harsh chemicals on the filter, as it can damage the cotton media. Also, always check the filter periodically to ensure it's working at its best.