Using your K&N air filter is a breeze. First, open your vehicle's factory air box. Take out the old air filter and replace it with the K&N drop - in filter. Make sure it fits snugly in place and then close the air box. When it comes to maintenance, you'll notice when the filter gets dirty as your vehicle's performance might drop a bit. At that time, you can wash the filter using a K&N cleaning kit. Follow the instructions on the kit carefully. After washing, let the filter dry completely before re - oiling it with K&N filter oil. Apply the oil evenly across the filter media. Remember, only use K&N cleaning and oiling products to ensure the filter's longevity and performance. Avoid using harsh chemicals or abrasive materials as they can damage the filter. And always refer to your vehicle's manual for any specific air filter installation or maintenance tips.