At present, there are numerous brands and models of motor oils, both of which are known as international famous brands. They have passed the SAE certification of the United States and are certified by certain international automobile companies. What fashionable nanotechnology, what to introduce the international advanced dewaxing and hydrogenation equipment, what 150,000 kilometers do not change the oil ... even in some areas in the south, every day will be born a new oil brand, every car owner who cares about their own vehicles will have This question, in the end how to choose oil?
The experts of Volkswagen's long-term oil supplier ROWE have provided a more detailed explanation for the majority of vehicle owners: more than ten years ago, due to the low precision of automobile engine manufacturing and the low quality of oil, the selection was made. 10W/40, 15W/40 are suitable. But with the advancement of automotive technology. Modern engines use electronically controlled fuel injection, catalytic converters, turbocharging, and intercooled technologies. In particular, the engine designed with the latest technology has high manufacturing precision. Now, the lower the viscosity of the engine is, the lower the viscosity is, the smaller the resistance is, the easier it is to start, the less fuel consumption is, and the inertia of the engine is increased and the noise of the engine is reduced. Therefore, under the premise of satisfying the lubrication requirements, more and more low-viscosity oils are now being promoted to achieve the purpose of energy conservation. Now, based on the differences in usage and area, we can roughly make the following recommendations:
The 4S shop is dark, and the black ones are scared! ! These JS seize the psychology of the new car driver, buy a new car to give you a free replacement, what is it called? Teach you to first recognize the road, put long lines to catch big fish, and then slaughter you twice before returning. Do not believe? Do you see the special price of transparent oil in the market of Shell, Mobil and other? Hey ~ ~ earn transparent money is not called JS. The formal oil store on the market generally has doors for manufacturers to do. The salesman of the factory visits them for three days or two. The fakes are definitely not available, and they can be used with confidence. The price is also fair, and often there are promotions with great discounts!
Do not listen to publicity to see the effectiveness of many oils are to promote what 50,000 kilometers does not change the oil, as well as propaganda 100,000 does not change the oil, these are not believed! The so-called "30000 does not change oil, 50,000 km overhaul." And now nanotechnology is a new high-tech vocabulary. It seems as if it is a world-leading product with magical features. Many manufacturers follow the trend to launch so-called nano-oil. What is nano? Nanotechnology is an emerging technology that emerged in the 1990s. It is a new technique for studying the laws and properties of electrons, atoms, and molecules in a space of 0.10 to 100 nanometers (one billionth of a meter). To say that the engine oil is a nano-oil, I really dare not use it because the engine is assembled and sealed in the middle with a cylinder pad. So tiny parts of a billionth of an metre of oil are not leaking under the high pressure in the engine? What is worse is that additives are nano-technology, base oil is not, it is nonsense. The world's more famous additive manufacturers such as Exxon, Derun and other companies have never produced nano additives.
The choice of oil level should refer to the vehicle maintenance manual in the factory. It clearly tells you what level of oil the car should use, as long as it is equal to or higher than the recommended level! With the original loading oil. This choice should be correct, but it is also necessary to understand what is the loading oil. The automobile factory does not have a lubricant production plant. The loading oil they use is basically produced by the designated lubricant factory. For example, BMW used Castrol oil and Volkswagen used ROWE oil. These OEM oils definitely meet the above standards.
I hope that through some explanations, we can let the majority of owners understand more about the reference point when choosing oil.
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