Finally, a place where bigger really is better. What defines an efficient filter As little pressure drop as possible. How do you achieve a low pressure drop Surface area. How do you get a lot of area into a compact in-line filter Pleats. More pleats means more surface area and, in turn, better-flowing filters. Aeromotive in-line filters boast the most surface area possible for the highest flowing filters. Machined out of aircraft-grade billet aluminum alloy. Precision-coated with black anodizing. Can be used with E85 and alcohol.