Using your K&N Universal Air Filter is easy. First, find the right spot for it based on your vehicle's air intake system. Make sure to clean the area where the filter will be installed to avoid any debris getting in. When installing, stretch the rubber flange if needed to fit it properly. Remember, it can stretch up to 1/16 of an inch (1.5mm). During use, keep an eye on how dirty the filter gets. When it starts to look clogged, it's time for a cleaning. To clean, remove the filter and use a K&N filter cleaning kit. Follow the instructions on the kit, usually involving soaking the filter in the cleaning solution, rinsing it gently, and then letting it dry completely. Don't use any harsh chemicals or tools that could damage the filter. Once dry, you can re - install it and keep your vehicle running smoothly. Also, check the rubber flange regularly for any signs of wear or damage. If you notice any issues, it might be time to replace the filter.