Should a new car be warmed up in winter?

[Sally]

For a new car in winter, the correct method to warm it up is: 1. Start the vehicle and keep the air conditioning turned off; 2. Let the engine idle for 30 seconds to 1 minute; 3. Begin driving slowly once the engine runs smoothly; 4. Drive normally and turn on the air conditioning after the engine coolant temperature gauge rises by 1 to 2 bars. The reasons for warming up a new car in winter are: 1. After being parked for a long time, the engine oil flows back to the oil pan at the bottom of the engine; 2. Before the engine reaches its operating temperature, the fuel supply system cannot effectively vaporize gasoline completely due to the lower temperature; 3. When parked, the gear oil flows to the lower part of the transmission, leaving the upper part without lubrication when the car is cold.