How long does it take to warm up the car in winter？

In winter, in order to make the automobile engine reach a suitable working temperature, it is usually necessary to carry out hot car operation. This process takes about 1 to 2 minutes to make the water temperature of the engine rise to the normal range, and then you can drive normally. The main functions of hot cars are as follows: First, long-term parking will cause the oil in the engine to flow back to the oil pan, leaving the upper part of the engine in a state of lack of lubrication. Hot car can effectively circulate engine oil to key parts of the engine, such as piston, connecting rod and crankshaft, and provide necessary lubrication for it. Secondly, when the engine does not reach the working temperature, the fuel supply system can’t completely vaporize the gasoline because of the low temperature, and the hot car is helpful to solve this problem. Finally, when the cold car starts, the gear oil will flow to the lower half of the gearbox. Only during the driving process, the gear operation will bring the gear oil at the bottom and lubricate the upper half. Therefore, proper hot car operation is very important to protect the automobile engine and gearbox.