Some car buyers feel that the higher the price of oil, the higher the price, so the use of synthetic oil in Chinese cars, especially new cars。As we all know, this is usually not worth the damage, and there are many disadvantages。The more expensive ones are not always good。If expensive oil is blindly applied, because the engine is too thin at normal operating temperature, the steam pressure will be very low, and even cannot reach the required pressure, and the necessary for normal lubrication can not be achieved。Increase engine damage rate。