The optimum temperature is 90 degrees, and the engine is relatively stable in such a temperature range.
Notes on water temperature when driving in winter:
1. In winter, the water temperature has not risen for a short time after starting the car. At this time, you can drive the car in low gear (manual transmission generally does not exceed third gear) After driving at a slow speed (generally no more than 40 kilometers per hour) for about 15-20 minutes, the water temperature will slowly rise and the vehicle's control sensitivity will slowly return to normal.
2. When the water temperature of the car reaches normal, drive slowly at a low speed. At this time, do not drive at a high speed, but keep it at a low speed. The engine speed should not exceed 3,000 rpm, and keep it at 2,000 rpm. Otherwise, the engine speed should not exceed 3,000 rpm. The severe wear and tear on the engine and gearbox is irreversible. After the engine temperature rises to normal operating temperature (it takes about 3 to 5 minutes), you can resume normal driving.
3. For manual transmission vehicles, first shift to 1st gear, do not step on the accelerator, and idle forward for about 3-5 minutes. However, if it is a heavy vehicle or needs to go up a ramp from under the basement, you must accelerator , but be sure to step on it gently and don't let the engine speed exceed 2,000 rpm. When the pointer of the water temperature meter rises to nearly 60°C (one-third of the scale of the water temperature meter), you can gradually accelerate the upshift in sequence.
Extended information:
Other things to note when using a car in winter:
1. Timely maintenance of the battery in winter
This is why the battery is short of power Problems are most likely to occur during the season, so it is particularly important to check the battery power. If you find white oxides at the electrode connections, you need to wash them away with warm water, because these oxides will cause insufficient power in the generator and cause the battery to be in a state of power loss. In serious cases, it will cause the car to be unable to start and the battery to be scrapped.
2. Ensure that the car windows are defogged in a timely manner
For fogging conditions in the car, you can use the air conditioner defogging method. Blowing the glass with hot air can also blow away the fog. It should be noted that the fog in the car will become larger when the hot air defogging is first turned on. This is because the temperature difference between the inside and outside is greater, and the hot air will dry out the moisture in the car. Afterwards, the fog will disappear.
Reference: People's Daily Online - Be careful when using your car in winter! Teach you how to survive the winter safely