Using your K&N XStream Top Universal Air Filter is easy. First, make sure your engine is off and cool. Remove the old air filter from your vehicle following the manufacturer's instructions. Then, simply install the new K&N filter in its place, ensuring a tight fit with the rubber flanges. When it comes to maintenance, you can tell it's time to clean the filter when it starts to look dirty. To clean it, use a K&N air filter cleaning kit. Wash the filter gently with the provided cleaner, then rinse it thoroughly. Let it dry completely before reinstalling it. Remember to always follow the cleaning kit's instructions. Also, keep in mind that while the rubber flanges can stretch a bit, don't force them too much to avoid damaging the filter. And if you have any questions about installation or maintenance, feel free to contact K&N's customer support.