Synthetic engine oil is characterized by: 1, good high and low temperature performance; 2, there is a long oil change cycle; 3, suitable for poor car condition. Engine oil can play the role of lubrication and wear reduction, auxiliary cooling and cooling, sealing and leakage prevention, rust prevention and corrosion prevention, and shock absorption and buffering. Converse is a small car launched by Dongfeng Nissan using the existing platform for the compact car market with a price below 6,543,800 yuan. Its competitors are locked in POLO, Fit, Tianyu SX4 and other models. Different from competitors, converse's biggest selling point is to position the model as a functional hatchback.