aFe Power MagnumFLOW 90-10002 Air Filter Oil (6.5 oz Aerosol, Gold) Highly refined filter oil captures the finest of dirt particles while still allowing maximum airflow Gold color oil for use with all aFe PRO Guard 7 air filters Also available in 8 oz squeeze bottle (aFep/n 90-10001) and 32 oz squeeze bottle (aFe p/n 90-10003) 32 oz squeeze bottle also available in a complete restore kit, with cleaner (aFe p/n 90-50520) aFe recommends recharging your aFe air filter every 20-30,000 miles