Turbo Oil CK-4 10W-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 CK-4 10W-40 is suitable for engines designed to meet Euro 4, Euro 5 and Euro 6 emissions standards. It also meets the requirements of recent specifications for petrol engine oils and is suitable for mixed fleets comprising both diesel and petrol vehicles.