Mobil 1™ ESP X4 0W-40 is an advanced synthetic technology engine oil specifically designed to provide excellent performance for high powered engines, providing excellent engine cleanliness, wear protection, strong durability and advanced fuel economy*. Mobil 1™ ESP X4 0W-40 is our latest technology developed in cooperation with Porsche, one of our key European Original Equipment Manufacturers (OEMs). Mobil 1™ ESP X4 0W-40 has been expertly engineered to help prolong the life in new emerging gasoline powered European vehicles.