Multi level: Made from high-quality base oil and additives, formulated through advanced formulas, it has superior high-temperature cleaning and dispersion, high-temperature oxidation resistance, and good viscosity temperature performance. It has strong adaptability to environmental temperatures, is versatile in winter and summer, efficient and anti-wear, energy-saving and environmentally friendly, and can effectively improve the lubrication efficiency and service life of diesel engines, ensuring strong and superior power performance of diesel engines. Existing varieties: CD 15W/40 16L、3.5L; CD10W/30 16L、3.5L; CD5W/30 16L、3.5L; CF-4 15W/40 18L、3.5L; CF-4 20W/50 18L; CF-4 10W/30 18L、3.5L。 Suitable for Dongfanghong LR, YT series and other similar manufacturers' four cylinder to six cylinder (50-200 horsepower) ordinary and turbocharged diesel engines.