Such as after a long rest or in winter and after each oil change. In other words, under normal use, if you use it every morning and evening, you don't need to work somewhere or heat the car. It can be said that most of the cars produced in recent ten years definitely do not need to be heated in the car.

This is the recommendation of the car manual. In other words, with the improvement of processing technology, fuel management technology and fuel pressure system, more and more cars no longer need to start in the same place. Determining whether it is necessary to start the car in a warm place requires a minimum of variation thinking. Some old ideas should be abandoned as soon as possible.

You can't look at today's events with old ideas, can you? After long-distance use, it is necessary to idle for a period of time to cool down the supercharger, and then turn it off. Because the modern supercharged engine has a delayed cooling system, it can continue to heat up after the flame is extinguished, so there is no need to delay combustion.

Moreover, the booster car does not need to be turned off when idling. Is that the point? Actually, it's not. It's just that the operation mode is different according to the different cooling technology adopted by the engine. This is actually a variant. In the past, all cars needed to be preheated, and if the carburetor was not preheated, it would be disobedient.

The manufacturer told you not to start the car in situ. Do you think you are more professional than the manufacturer? Or do you think manufacturers are plotting to make everyone's cars break down more easily and then make a profit in the after-sales market? No manufacturer will use this method to reduce brand-based competition. So don't look at today's events with old ideas.

I still remember when I bought my first computer, the instructions said that I should turn on the monitor first, and then turn on the mainframe. Many friends in unknown so also call this operation computer preheating. At that time, the computer had to turn on the monitor first, because this was the diagnosis of that period. The reason is very simple, because the display voltage of CRT is high when it is started, which easily affects the motherboard.

So it was okay to turn on the computer at that time, but the computer was still very hot? CRT monitors are almost invisible, all of them are liquid crystal displays, and even many models connect the monitors to the host computer. So don't mistake the current car for a warm engine, because the old car needs a warm engine.

At first, the engine was limited by machining accuracy, pump oil pressure, imperfect oil management system and oil performance, and the carburetor temperature was not high enough to control oil and gas accumulation. The engine machine requires high precision, and the fuel pump pressure of the fuel system is also higher and more perfect. Usually, the pressure will increase within a few seconds after starting.

It takes more than ten seconds to complete this cycle. In other words, all engine parts are lubricated at this time, and there is no dry grinding. It just turns the original in-situ heating process into normal hot car driving, that is, as long as you avoid high-speed driving, heavy load = hot car driving. So friends don't have to take car warming seriously, but the way of car warming has changed.

In the past, we used to "sit tight" and drive a car to warm up. The change of racing car is not only reflected in the fierceness of racing car, but also in running. From the above description of running-in, we can know that the running-in process has not disappeared, but the running-in requirements have become simple, and ordinary driving = running-in.

Similarly, cars have less and less requirements for hot cars and become more and more convenient. What is high speed and high load? More than 4000 rpm belongs to high speed type, and more than 2/3 throttle opening belongs to high load range. You can't get there by driving normally in the city. For high-end models such as AMG, when the temperature is not enough, the system will reduce the engine speed.

Similar to the low temperature protection of gearbox. Which 4S shop will refuse the warranty on the grounds that the owner doesn't like the car? Which of the following problems does not exist under high temperature and high load conditions? Needless to say, this is just common sense. So don't always worry about low-temperature oil and water, you will worry, and manufacturers will worry. Therefore, the oil should start from 0W to ensure that the oil and water are not bad at low temperature.