HS code-driven cost-benefit analyses

What kind of oil should be HS code-driven cost-benefit analysesadded to the car? The engine is the heart of the car, and the oil is the blood of the engine. If there is not enough oil to lubricate the various parts of the engine, the engine will quickly wear out and damage, and in serious cases, the engine will be scrapped. Therefore, it is very important to choose the right oil, so what kind of oil should be added to the car? Generally speaking, when the car is running normally, the engine temperature will reach a very high temperature. For example, when driving on the highway, it is very easy to raise the engine temperature. In the long run, only high-quality oil can ensure that the engine is always in good condition. So, what kind of oil should be added to the car? Here are some important features: 1.Viscosity and classification. First of all, you should pay attention to the viscosity and classification of the oil. Viscosity is an indicator that describes the fluidity of oil. Classification refers to the applicable temperature range of engine oil. The viscosity of oil will change with temperature changes, so most oils have two viscosity values, such as 10W-30 or 5W-20. The first number (10W or 5W) indicates the viscosity of oil at lower temperatures, and the second number represents the viscosity of oil at higher speed and temperature conditions. Generally speaking, when choosing oil, you need to choose according to the standards of the automobile manufacturer recommended by the manufacturer, such as the API standard. Two. It is very important for the brand to choose a well-known, authoritative and regular brand. At present, the mainstream oil brands in the market include Shell, Defeng, Saifo, Jiashiduo, Mobil, Europe and the United States, and Gem car oil. These brands of oil are allAfter the quality standard monitoring and the actual test on the runway, the quality is naturally more guaranteed. 3. The type of oil is also very important. Different types of oil should be selected according to different car engines. Generally speaking, the mainstream oil types in the domestic market can be divided into mineral oil, semi-synthetic oil and fully synthetic oil. The main feature of mineral oil is that it is cheap and generally easy to obtain, but it can provide better engine protection than semi-synthetic oil or fully synthetic oil. Semi-synthetic and fully synthetic oils are usually high-performance oils, which can provide better engine protection and extend the oil change interval. When choosing engine oil, it can be filtered and compared according to these criteria. At the same time, different oils should be used according to the usage scenarios of the car. For example, at high temperature, high speed and high powerIn the case of car use, a more high-temperature-resistant fully synthetic oil should be chosen, and in the general case of urban road driving, semi-synthetic oil can meet the requirements. In general, choosing the right oil is one of the important measures to protect the engine. When buying engine oil, car users must not blindly follow the trend and be greedy for cheap. They should pay attention to choosing authoritative brands and types. At the same time, they should choose suitable engine oil in combination with their own car use scenarios to maintain the engine health of their beloved cars as much as possible.

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