T66330 is refined with high-quality detergents, dispersants, antioxidants, anti-wear components and other additives. The product has a unique formula and strong fuel adaptability, which can effectively extend the life of the oil. The relevant oils formulated have good detergency, abrasion resistance, anti-oxidation, acid neutralization and alkali value retention capabilities,.The combination of T66330 with Ⅰ and Ⅱ base oils can be used to prepare API CI-4/CH-4/CF-4/SL/CF engine oil.