Description SAE 5W-40 Motor Oilbr/Mobil 18482; Turbo Diesel Truck is engineered to help extend engine life in modern turbocharged diesel engines operating in severe applications. Mobil 1 Turbo Diesel Truck 5W-40 is suitable for use with most diesel-powered equipment of U.S., European and Japanese equipment builders, including both light-duty and heavy-duty applications.br/Mobil 1 Turbo Diesel Truck 5W-40 is recommended for use in all super high-performance diesel applications, including modern low emission engine designs with Exhaust Gas Recirculation (EGR). Mobil 1 5W-40 Turbo Diesel Truck Motor Oil, 1 gal.