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[YesAuto News] In recent days, we have conducted continuous follow-up reports on the problems of oil emulsification and increase in Toyota/Lexus dual-engine hybrid models. (Detailed review: “Emergency investigation! Toyota/Lexus involved in the oil incident”, “Free oil change Toyota/Lexus oil incident tracking”) As GAC Toyota, FAW Toyota and Lexus officials have not responded directly to the matter, so We choose to consult three official 400 service calls to see if we can help users solve related problems . Judging from the results, only FAW Toyota was able to clarify the problem of increased oil and emulsification, and gave some useful help; while GAC Toyota and Lexus 400 telephones were unclear about the oil problem, and asked consumers if they encountered problems. Still go to the 4S shop to solve it.

In addition to asking the official 400 service number, we also learned two useful information from users: 1. GAC Toyota Camry dual-engine hybrid models have problems with increased oil. Some owners have contacted 4S shops to deal with the increase in oil. 4S The shop’s common solution is to pump/drain the excess oil . 2. The FAW Toyota 4S shop will answer why the oil will increase/emulsify and what effect it will have. We will show it below, let’s take a look at it together.

● GAC Toyota/Lexus/ FAW Toyota ’s official 400 service call response

★ Official reply of GAC Toyota 400:

“I don't know why the increase in oil and emulsification occurs on the vehicle. Once the vehicle has a problem, you need to go to the nearest 4S store for detailed inspection and treatment. The specific operation requires the in-store maintenance staff to conduct an inspection and then make a judgment. GAC Toyota provides the owner of the vehicle. Three-year or 100,000-kilometer warranty service can be repaired free of charge within the scope of the service.”

Through some Guangzhou Camry dual-engine hybrid owners, we learned that some Camry dual-engine models have problems with increased oil and a pungent odor (should be mixed with gasoline). Some of these car owners have contacted 4S shops, and the common solution is to drain the excess oil.

It is worth noting that engine oil has the functions of lubrication, heat dissipation, sealing, cleaning and anti-corrosion. Once there is an excessive increase in engine oil, it will cause the engine oil to deteriorate and affect the performance of the engine oil, which may affect the engine. If the user has this problem, please pay attention to it and solve it as soon as possible.

★ Official reply of Lexus 400:

“I don’t know why the increase in oil and emulsification occurs on the vehicle. If there is a problem with the vehicle, you can go to an official authorized dealer for inspection. Lexus provides a free oil replacement service. If there are other problems, Lexus also provides 6 years of 15 years for hybrid models. Free maintenance for 10,000 kilometers can always be overhauled/repaired free of charge.”

★ Official reply of FAW Toyota 400:

The overall answer of FAW Toyota 400 is relatively sufficient, and it can explain in detail the problem of increased oil/emulsification on hybrid models, and it is recommended to go to the nearest 4S store for inspection. For different problems, provide different maintenance services. In addition, the owner's information can be provided to the 400 official, and there will be professional maintenance personnel to answer questions. (Detailed reply, everyone, look down)

On March 12, Mr. Xie, the owner of Asia Dragon Shuangqing hybrid vehicle, received a call from FAW Toyota’s dealer manager, answering questions about why the car had increased oil and oil emulsification. The dealer’s phone number gave him an answer. The explanation is basically the same as that given by the official 400. Here, we have organized the content of the call so that everyone can understand the real situation.

●Summary of the reply received from FAW Toyota 4S shop owners regarding oil problems

◆ Owner's question: Why does the oil increase and emulsification occur?

Dealer's reply: There may be various reasons for the increase in engine oil. In general, the following reasons are considered:

1. The engine factory injects engine oil based on the F scale line (upper limit), but there is a certain tolerance. When the actual oil is injected, the F line of the oil caliper may be exceeded, but it is still within the specified range.
2. When the oil is changed during vehicle maintenance, the oil level F line (upper limit) may also be exceeded.
3. According to the working principle of the engine, a very small amount of incompletely burned gasoline enters the oil through the gap between the piston ring and the cylinder block during cold start at low temperature. This is a normal phenomenon.
4. When measuring the height of the oil level, whether the ground is level or not, and the temperature of the oil also affects the height of the liquid level.

The cause of emulsification is mainly due to the intermittent operation of the gasoline engine of the hybrid vehicle when driving at low speeds and short distances. When the engine stops before the engine is fully warmed up, the moisture condensed on the inside of the oil filler cap cannot be completely volatilized and appears locally. The white emulsification phenomenon will disappear after the engine continues to work and the engine oil temperature rises. This is also a normal phenomenon.

Owner's question: What is the normal range value that Toyota thinks for increased engine oil?

Dealer's reply: At present, according to Toyota's standard measurement method, the oil level exceeds 25mm from the F line, which is a problem of increased oil. At that time, please contact the nearest dealership to check in.

Owner's question: Is the increased oil level and emulsification a quality problem? Will it affect the performance of the engine?

Dealer's reply: During the working process of the engine, when driving at low speed and short distance, the oil level will rise and emulsification inside the oil filler cap will occur when the engine cannot be fully warmed up, which has no effect on the engine performance.

Owner's question: Can the vehicle with the above phenomenon continue to be used normally? Will further increase in oil volume or emulsification cause other problems?

Dealer's reply: If the engine failure light does not turn on after the engine is started, and the oil level is not within 25mm of the F line, it means that the engine is normal, please rest assured to use it. If you use standard methods to measure the oil level more than 25mm above the F line, please contact the nearest dealer and check in.

Owner's question: Compared with the fuel model, the hybrid version has more reports. Is it a problem with the hybrid system?

Dealer's reply: According to the information about the above phenomenon reported by users and the media, combined with the results of previous investigations, all gasoline engines will have the same phenomenon. When driving at low speeds, compared with the gasoline version, the gasoline engine of the hybrid version starts and stops more frequently, and this phenomenon is more likely to occur.

Car owner's question: Is it a phenomenon unique to the TNGA architecture? Will other models have the same problem?

Dealer's reply: In response to the information on the above phenomenon reported by users and the media, combined with the results of previous surveys, the same phenomenon will occur regardless of the gasoline engine under the same conditions of use. In addition, we think the same phenomenon will occur in other models.

Car owner's question: Do other countries and regions have the same problem?

Dealer's reply: According to the information about the above phenomenon reported by users and the media, combined with the results of previous surveys, the same phenomenon will occur in other countries and regions under the same conditions of use.

●The editor has something to say:

From the results of the official 400 communication between the three car companies, only FAW Toyota can clearly state the reasons for the increased oil and emulsification problems on the vehicles. GAC Toyota and Lexus did not explain this issue, and both suggested 4S. After the shop inspection, repair it.

Judging from the results of communication between FAW Toyota dealers and car owners, FAW Toyota dealers believe that the increased oil and emulsification problems of the brand's hybrid models are normal. Although the engine oil has the above problems, it does not have a direct impact on the engine. At the same time, for other models and regions, there may also be increased oil and emulsification.

At present, we can see from the information provided by forum netizens and car owners that for some of Toyota's dual-engine hybrid models, there are fewer problems with oil emulsification and relatively more problems with increased oil. From the perspective of regional distribution, Beijing, Shanghai, Guangzhou and other places have related problems with vehicles.

For this reason, we still need to remind Toyota/Lexus dual-engine owners to check the condition of the vehicle in time and maintain good driving habits. If there is an increase in oil or oil emulsification, please call the official authorized 4S shop to make an appointment, and then go to The shop carries out the oil change to avoid causing secondary damage to the vehicle.

We will continue to report on the latest development of the incident. If a car owner encounters a similar problem, please contact us at the bottom of the car home Li Na/Zhou Yi editor blog.