No matter what brand of car, it will come with a vehicle maintenance manual when it leaves the factory, and reasonable oil recommendations are given in the maintenance manual. Because the selection of engine oil should first be based on the vehicle maintenance manual as a reference, and then take into account the comprehensive vehicle conditions, car environment, road conditions, driving habits, etc., to select the matching oil viscosity for the car, which is the key to the long-term use of the vehicle.
Several precautions for vehicle oil selection:
1. From the aspect of vehicle condition: if the vehicle has been overhauled and the vehicle is relatively old, you can appropriately use a more viscous oil, such as the vehicle that originally used 5W30 oil can replace the 5W40 oil. Because the oil film of 5W40 is thicker, it has better sealing performance for vehicles with large parts gaps and serious wear, reducing the probability of burning engine oil in vehicles.
2. From the perspective of the car environment: there are more sub-zero weather in cold areas, such as the Northeast region, it is advisable to choose 0W engine oil, such as 0W20, 0W30, 0W40, etc.; because the number in front of W represents the low temperature performance of the oil, the smaller the number before W, the better the low temperature fluidity, and the better the cold start protection of the vehicle. There are many high temperature weather, such as Guangdong, Guangxi and other provinces can use 5W or 10W engine oil, such as the province where the imperial aviation lubricating oil is located in Shandong, which is located in East China, where the minimum temperature is not less than -20 degrees Celsius, and the maximum temperature is about 40 degrees Celsius, according to the car series to choose 0W20, 5W30, 5W40 is more appropriate.
3. From the road conditions and driving habits of the driver: poor road conditions, long-term high-speed, and poor driving habits can appropriately use slightly large viscosity engine oil, because the oil film of large viscosity engine oil is thick enough, and it is not easy to tear the oil film in a long-term high temperature state.
The above are the three precautions for vehicle oil selection, which are suggestions given based on some special factors, and are only for the reference of car owners. If you have any questions, you can consult relevant local professionals and go to regular auto repair shops or 4S points for maintenance.