AFE Air Filter Cleaning Kit. The AFE Air Filter Cleaning Kit is specially formulated to keep your AFE Air Filter is performing like it just came out of the box. The AFE Air Filter catches gobs of filth, dirt and other harmful particles in its filter medium while protecting and enhancing your engine's performance. After 30,000-50,000 miles (under normal driving conditions), the AFE Air Filter will need a cleaning. The squeeze-bottle application makes the 12 oz. bottle of AFE Filter Cleaner and 8 oz. bottle of filter oil a breeze to use. The AFE Air Filter Cleaning Kit will yield roughly 3 thorough cleanings or about 100,000-150,000 miles of top-performance filtration. AFE Air Filter Cleaning Kit. Air Filters, Air Filter Cleaning Kits.