"USAGE FEATURES AND BENEFITS 10W-40 CI-4 is a high performance heavy duty diesel engine oil produced with synthetic oil technology. It provides excellent performance in diesel engines operating with low and high sulfur fuels. It is recommended for all truck, bus, lorry, construction equipment and generator applications with diesel engines, especially turbocharged and low emission diesel engines. It provides safe use in all engines by preventing wear at high speeds and temperatures. It provides excellent protection and fuel economy by making excellent lubrication at low temperatures. It increases combustion efficiency and engine power by keeping the engine clean."