Castrol Gold Care Ultra Clean is a mid-range Castrol oil that meets the American Petroleum Institute's API SN Petroleum Standard for high temperature stability and sludge resistance. However, the low-temperature performance of Jinjiahu's ultra-clean is not as good as that of the high-end series, and the service life is shorter. Among them, the 5W-30 with better performance is priced at 238 yuan for 4 liters in China, and the oil change mileage is 5,000 kilometers, which can meet the needs of general car owners.