Product Specifications: 4L, 18L | Executive Standard: GB11122-2006 (API CF-4) | Product Description: Viscosity Grades: 10W-30, 15W-40, 20W-50 ● Formulated with refined imported base oils and high-quality composite additives for diesel engines, this product meets the performance requirements for heavy-duty diesel engine oils, providing continuous protection for heavy-duty turbocharged diesel engines. Its quality complies with the API CF-4 specification and meets diesel engine oil standards set by major global manufacturers, including ACEA E2, MB 228.1, MAN 270/271, and Mack EO-K2. ● Superior sludge inhibition keeps the engine cleaner; ● Low viscosity shear loss ensures consistent and stable oil pressure; ● Provides excellent engine protection and effectively prevents piston ring sticking; ● Effectively controls oil consumption and improves fuel economy. | Anti-wear Diesel Engine Oil | Suitable Vehicles: ● Suitable for all turbocharged or naturally aspirated diesel engines requiring CF-4 grade oil, including various imported and domestic heavy-duty transport vehicles equipped with turbocharged diesel engines, luxury coaches, and large-to-medium construction machinery.