Turbo Oil CJ-4 15W-40 is an advanced diesel engine oil that meets the requirements of the latest specifications for this type of lubricant. It is intended for use in modern diesel engines manufactured in the United States, including those equipped with turbochargers or superchargers. Turbo Oil CJ-4 15W-40 helps keep the engine clean, reduces deposit formation and protects engine components against rust and corrosion. Turbo Oil CJ-4 15W-40 is suitable for engines designed to meet Euro 4 and Euro 5 emissions standards, as well as the forthcoming Euro 6 standard.