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The high oil consumption of motor vehicles is the concern of many owners. Here, we conclude the following key factors that affect the oil consumption of your car for your reference. In addition, it is suggested that the majority of vehicle owners check the oil level once every 1000 kilometers. If conditions permit, it is best to check every time when oil is added. The factors that affect the consumption: 1. The viscosity of the oil: the lower the viscosity of the oil, the worse the sealing effect is, the more the volume of the inhaled combustion chamber. 2, the driving condition of vehicles: fast running and frequent acceleration and deceleration will increase the consumption of oil. 3. During the high speed running, the diluted components will evaporate, so the oil will be overconsumed after high speed running. 4, because the new engine has not run in, it will consume more oil. The maximum consumption of oil in the running in period of Toyota Corporation is 1.0L/1000km. From the above analysis, the inspection of oil level is one of the key items of vehicle maintenance. Another point is that the oil will dilute due to the adsorption of water vapor during the use of oil, so it is difficult to correctly judge the actual oil level when judging the consumption of oil. Therefore, even if the oil level is normal, we have to replace it regularly according to the mileage requirements. Finally, I suggest that you check the oil level every 1000 kilometers for the longest time. If conditions permit, it is best to check every time the oil is supplied. Engine oil has four functions of cooling, lubrication, cleaning and sealing. It plays a vital role in ensuring the normal work of the engine. With the increase of the working time of the engine, the engine oil is polluted by the influence of high temperature oxidation, the wear of the mechanical parts, the corrosion of the fuel steam and so on. In addition, engine oil also has a certain amount of consumption in normal use. So we have to check the oil level and the degree of contamination regularly, which is why we need to change the oil regularly. If the oil is below the specified value and affects the work of the engine, it will cause fatal injury. Next we will discuss specifically the causes of engine oil consumption and how to avoid the terrible consequences. Under normal circumstances, the oil will also be consumed. In the fundamental sense, there is no engine that absolutely does not consume oil. The reasons are as follows: 1. The oil is used to lubricate the piston, piston ring and cylinder, and when the piston moves down, a layer of oil film will be left on the cylinder wall. When the vehicle decelerates, the high negative pressure produces some of this oil into the combustion chamber, which is like the oil film that is partly on the cylinder wall and is burned by the burning gas of the high temperature during the combustion process. 2. Oil is also used to lubricate the intake valve rod and is inhaled into the combustion chamber. High temperature exhaust gases are also used to lubricate the oil of the exhaust valve.