FRAM PH43 Extra Guard Oil Filter: * Uses cellulose and synthetic, glass fiber blended media * Provides 3x more engine protection than the average of leading economy oil filters * 95 percent dirt trapping efficiency * Engine protection is the FRAM measure of a filter"s ability to not just trap dirt but hold it for the life of the filter * Ideal balance of dirt-trapping efficiency and dirt-holding capacity * Every FRAM oil filter uses a special blend of fibers and resin, providing a proprietary filter media that delivers excellent engine protection * Blending synthetic fibers with cellulose increases a filter"s dirt-trapping efficiency and its dirt-holding capacity for higher levels of engine protection and longer filter life