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Since 20 12, the problem of oil emulsification has been paid more and more attention by consumers. Up to now, Chezhi.com, as the largest information collection platform for defective automobile products in China, has received nearly 1500 complaints about engine oil emulsification. Although with the joint efforts of relevant parties, the number of vehicles whose owners complain about oil emulsification has been greatly reduced, this situation will still appear seasonally every winter. The data shows that the Chinese V3 has become the most similar vehicle this winter.

Facing the emulsification problem, manufacturers have different attitudes.

As we all know, engine oil, commonly known as lubricating oil, is known as the "blood" of an automobile, but it can not only play the role of lubrication, but also has the functions of cleaning, rust prevention and cooling, which plays a vital role in prolonging the life of an engine. However, for the emergence of emulsification problems, various manufacturers have shown completely different attitudes. As early as 20 13 changan CS35 car appeared a lot of problems, Chezhi. Com is aware of the seriousness of the problem. After many times of communication with the manufacturer, Changan passenger car gave a solution and took the initiative to recall it to AQSIQ for the record.

For emulsifying phenomenon produced in changan CS35, the reason given by the manufacturer is: "CS35 is equipped with an external cyclone bin (i.e. oil-gas separator), because the cyclone bin is conducive to emissions, so it was not cancelled when it was officially listed. However, it was cancelled because it was found to have the disadvantage of oil emulsification. " In the recall announcement, Changan passenger car admitted that the lubricating ability of emulsified oil was greatly reduced, and continuous operation would lead to serious consequences of engine damage. Vehicles within the scope of recall have been treated by replacing the crankcase ventilation system pipeline, cleaning the engine and changing the oil free of charge. If necessary, the engine will be replaced for the faulty vehicles. Since then, Changan Automobile has also launched a series of improvement and upgrading programs. In the winter of 20 14, the complaints of CS35 oil emulsification have dropped to double digits, while in the winter of 20 15, no 1 case has been found so far, which shows that the manufacturers have made tangible achievements in facing up to and paying attention to it.

During this period, more than ten models of Great Wall Motor, Beijing Automobile, Geely Automobile and other brands also had similar oil emulsification problems. According to the data, except for one model equipped with Mitsubishi 4G 15 engine, all these models adopt "4A9 series" engine produced by Shenyang Aerospace Mitsubishi. Experts in the industry answered this question, saying that if emulsification mostly occurs on the inner wall of valve cover and oil filler, the main problem is still related to the air leakage of engine piston ring, especially in winter.

However, for the above situation, Aerospace Mitsubishi does not agree. In its public statement, it was clearly pointed out that the filler cap of individual engines was more or less attached with emulsion, but no water residue was found in the engine oil and no emulsifying phenomenon was found in the oil pan. Therefore, the manufacturer believes that Aerospace Mitsubishi

4A9 engine has no oil emulsification problem, and the emulsion accumulated in the fuel tank cover is completely different from the oil emulsification problem. It is normal for the filler cap to accumulate emulsion, which will not affect the use of the engine. However, due to the attitude of engine suppliers, no corresponding solution has been given for unified caliber.

Unfortunately, the benchmark function of Changan passenger car's decisive recall of CS35 did not cause other enterprises to follow suit. So, does the problem of oil emulsification have any effect on the engine? In order to verify whether the emulsifying phenomenon of engine oil reflected by the owner (including the accumulation of emulsion at the oil filler) has an important negative impact on the vehicle engine, Chezhi. Com studied the follow-up complaint information of several key models, and found no abnormal situation. However, insiders said that the fact that there are no problems at present does not mean that the negative impact does not exist, but it will take longer to verify.

There are many doubts in the official micro-analysis of Chinese V3 initial emulsification.

Since 20 12, oil emulsification has appeared in complaints almost every winter. China V3, which just went on the market in May this year, has become another "explosion" after the winter of 20 15. According to the complaint data, since February 8, 65438, eight related complaints have been received, which shows the existing problems of oil emulsification.

In the complaint, Mr. Wang of Liaoning said that not only did the oil cover agglutinate thick emulsion, but also emulsion appeared on the oil dipstick. After the owner reported the problem to the special service station, he was told that it was normal for short-distance driving to be emulsified, and this problem should not occur for long-distance running. This kind of reply is unacceptable. Mr. Wang believes that no one can drive but run long distances. If we infer from the logic of technicians, can it be understood that the vehicles in emulsifying phenomenon are abnormal? ! This is obviously unreasonable.

Shortly after China V3 exposed the problem of oil emulsification, the official account of 20 15 15 wechat, the official wechat of China Automobile, wrote an article entitled "Automobile failures are high in winter, how to break the oil emulsification? The article has attracted the attention of the car quality network. Although the manufacturers did not face up to emulsifying phenomenon and China V3 engine oil, this article is obviously targeted, and there are many doubts, making it impossible to guess what medicine the manufacturers are selling in this gourd.

First of all, it is puzzling that "oil emulsification is a common fault of cars in winter" and "old car owners may be used to this phenomenon". Oil emulsification itself is a small probability event, and it suddenly becomes a frequent fault in the mouth of manufacturers (note that manufacturers admit that it is a fault). The so-called old driver doesn't know how to define it. In fact, with the development of passenger car engine technology in the past 30 years, it is difficult for drivers to capture emulsified oil. Regardless of other brands of cars, judging from the complaints of China Automobile, at present, only the BM 15LC engine used by China Automobile V3 has oil emulsification problems, and no other models have complained, which seems to be difficult to equate with "frequent occurrence".

Secondly, the manufacturer's explanation of white latex accessories is more meaningful. It is mentioned in the article that "it is not the quality problems of engine castings such as sand holes and cracks that cause antifreeze to penetrate into the crankcase and mix with engine oil to form white emulsion attachments, but the inevitable result of the combination of automobile engine working process and specific natural environment." Whether this is moaning without illness or there is no silver here for 320 seems to be the answer given based on the complaints of the current car owners. Of the eight complaints received in Chezhi.com, three mentioned the decrease of antifreeze. In his complaint, Mr. Ge from Anhui said that after checking a post on a website forum, he found that his Chinese V3 did have emulsified oil. Not only that, the liquid level of antifreeze is obviously reduced, but at this time, the oil level is checked by pulling out the oil gauge and it is found that the liquid level is obviously much higher than the highest scale. In this regard, Mr. Wei of Guangxi found that the liquid level of antifreeze dropped and thought it was a new car. After adding it once, the inspection was reduced. If what the manufacturer said is true, then where did this part of antifreeze go, which made the owner very confused.

Finally, the soft article of China Automobile not only completely denies the negative impact that engine oil emulsification may have on vehicles, but also claims that there must be water in the engine oil in order to beautify the existing problems. This is almost nonsense. 20 13 changan passenger car has a judgment standard for the definition of CS35 oil emulsification: if there is emulsification on the dipstick, it is regarded as oil emulsification. In the complaint about China V3, many photos sent by car owners clearly show that there is obvious emulsion on the dipstick. If China Auto calls it normal, it is more fearless than Shenyang Aerospace Mitsubishi. Not only that, but also the car. Com has consulted relevant people in the industry before and said that according to the national standard GB11120-89, oil is not allowed to contain water. However, this article published by China Auto on WeChat official account thinks that there must be "there must be", and it is puzzling to send the burnt exhaust gas into the crankcase (oil pan) normally, because this is precisely the main reason for changan CS35's recall in that year.

Although they are both independent brands, the attitudes of Changan Automobile and Zhonghua Automobile are quite different when facing the same problem, which makes people feel deeply. The engine oil emulsifying phenomenon produced by China V3 this time is no different from the original problems of changan CS35 and models using 4A9 series engines, and the handling method of China Automobile will be the key to success in the future. We hope that we will never act rashly with an article without technical content. After all, although the Chinese V3 has only been on the market for more than half a year, the sales of more than 50,000 vehicles have made it the mainstay of China Auto. If you can't face the problem directly, it is likely to ruin the current sales.