What is the correct method for warming up a car?

[CooperRose]

The correct method for warming up a car is as follows: Take 0 degrees Celsius as the standard temperature, with 60 seconds of idling in place as the standard warm-up time. For every 1 degree Celsius increase or decrease in temperature, the idling warm-up time should be reduced or increased by 1 second. After starting the engine for one minute, you can drive, but avoid driving at high RPM. Maintain a low speed with the engine RPM not exceeding 3000, generally keeping it around 2000 RPM. Otherwise, the severe wear on the engine and transmission will be irreversible. Warming up the car is not just about the engine; the same principle applies to the transmission. The transmission consists of gears immersed in transmission fluid, and the internal temperature of the transmission can only be increased through gear friction and fluid flow. When the transmission is just started, its temperature is low, making it unsuitable for high-torque, high-RPM operation. You can drive slowly for a short distance until the engine and transmission fluid temperatures approach normal levels before engaging in high-torque, high-RPM operation.