Motorcraft filters are engineered to the high quality standards of the Ford Motor Company and are recommended by Ford as the original equipment replacement filter for Ford, Lincoln and Mercury vehicles. They are designed to help protect against engine wear by screening out abrasives, such as carbon, sand, dust and bits of metal before they can get into your oil. Pressure-relief valves help minimize the chance of contaminated oil circulating back into the engine and also help maintain the supply of oil to the engine under extreme cold conditions or if the filter gets clogged. The outer casings are constructed of steel, “ironed” for a precise fit, painted to resist rust and include flutings to ease removal. The efficient filter media offers increased dirt-collecting capability and ability to capture more engine-harming particles. Silicone anti-drain back valves help prevent oil from draining out of the filter and engine when the engine is not running and resist the aging effects that an engine’s high heat can cause.