This Air Filter Cleaning Kit is designed for cleaning your oiled cotton air filter when it is time to be serviced. The kit comes with air filter cleaner and air filter oil. It will restore air flow efficiency and will bring your oiled cotton air filter to like new condition. The cleaner works to dissolve the dirt build up and old filter oil, then it can be washed away with water. After the air filter fully dries re-oil your air filter then reinstall it.