99-11311The only oil designed specifically for K&N filtersSpecially formulated to improve air filter performanceQuickly penetrates and saturates the filter pleatsTwo 1/2 ounce pillow packs includedK&N Air Filter Oil is the only oil specially formulated to work in combination with the cotton fabric in K&N Filtercharger elements providing a superior air filtration system. When used as directed, it quickly penetrates the filter pleats, where it remains suspended in the cotton fabric. Includes two 1/2 ounce pillow packs of air filter oil.