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Winter is not hot car damage the engine and oil
Some owners heard that the current vehicle is being omitted due to technological improvements. In order to rush to work, vehicles that are parked overnight are often driven off. While almost all professionals mentioned this habit of driving, they all thought it was both depleting the engine and wasting oil. According to reports, the engine after a night of standing, the residual pressure on the friction surface of the lubricant has long disappeared, lost the oil film protection, low temperature makes the viscosity of the lubricant greatly increased, the adhesion and fluidity worse. Therefore, the wear of the hot car on the engine is considerable. At the same time, if the engine is started at a low temperature after starting at a low temperature, since the temperature is still low, the atomization of gasoline is not sufficient and combustion is not sufficient, and the formation of coke is easily formed, which is very costly.
Whether the hot car finishes watching water temperature and speed
Many owners will get hot cars after the cold car starts, but there is no clear idea of ​​how long the hot car will be. Some think it takes 3 to 5 minutes, and some think 30 seconds is enough. The technical staff of each shop did not have the same answer. Asked about the reasons, the professional may conclude that the technical indicators of the vehicles are different, the experience is different, and the condition of the vehicles is different. The time of the hot cars varies. The more mainstream concept is that currently on the market, due to technical improvements, hot car time can be shortened compared to older vehicles. The specific hot car time can refer to two indicators, one is water temperature, and the other is engine speed.
In general, if you are in the process of idling a hot car, you first need to return the engine speed to normal idle speed. Some Ashkenazi models have high speeds, and they have to wait until about 1000 rpm after starting. Other models also have idling speeds around 800 rpm. This is one of the conditions that need to be met. Another condition is that the dashboard shows that there has been a change in water temperature. Some owners will probably wait until the water temperature rises to 70-80 degrees Celsius and then run normally. This is also a good choice.
Short-term hot car in place can idle speed
It is still controversial as to how to use the in-situ hot car after the cold start and how to use the hot car at idle speed. There is a view that the in-situ hot car has no "moving" gearbox. Because, in the cold, gear oil flows to the lower half of the gearbox. Only when driving, the gear oil at the bottom will be lifted due to the operation of the gear and the upper half will be lubricated.
However, some technicians believe that hot cars in the field and idling walking cars are hot car processes. The process of in-situ hot car should not be cancelled. Its specific time should be at least 30 seconds or so, so that the operation of the oil pump will transport the oil to the pistons, connecting rods, crankshafts and other parts where the engine needs lubrication most. Afterwards, the vehicle can start. However, it is not advisable for the owner to increase the throttle within a short distance of two or three hundred meters from the start. The general operation is to follow the above mentioned water temperature and speed and then step on the throttle.
Cold start should not be started heating
In addition, recently, especially in the morning, the weather was very cold. The owner climbed out of bed and went to work. He liked to turn on the air conditioner to blow the warm air in the car. It should be noted that it is not advisable to turn on the heater before the hot car is started after the cold car starts. From an energy-saving point of view, vehicles that started overnight in the winter have warmed up, and fresh air has just blown out. The car has not been heated and heated so fast that it will consume fuel.