It's your turn to smash things? ! What is the increase in engine oil of Toyota 2.5 twin-engine power?
In the forums of major automobile media, the posts reflecting the phenomenon of increasing engine oil of Toyota Asian Dragon have been on the rise, all of which are about the discussion that the engine oil level of Asian Dragon exceeds the calibration scale of oil dipstick. The feedback from the owners at the forum is not only an Asian Dragon twin engine, but also GAC Toyota Camry twin engine equipped with the same 2.5L twin engine power and imported lexus ES300h.
There are lessons from Honda 1.5T oil valve. How did Toyota, which has always taken reliability as its killer, take its essence and develop its own "oil well"? This happened in a self-priming twin-engine car. ...
On second thought, the same oil rise also broke out in the cold season. Referring to the oil valve incident that broke out in China of Honda in the winter of 20 18, we may find some clues about the increase of engine oil of Toyota 2.5L twin-engine power.
How did Honda's "oil valve" happen?
As a lesson from the past, Honda's oil valve is not simply an increase in oil quantity, but because the oil is mixed with gasoline, which leads to the increase and dilution of oil level, and finally the observed increase in oil quantity appears. Once the engine oil is diluted, it will seriously affect the lubrication of the engine, lead to the accelerated aging of the piston, piston ring, crankshaft and other components, and reduce the life of the vehicle.
This is the same as the Chinese medicine soup made by your mother when she was a child. It is a truth that you feel bitter and then add water to dilute the bitterness, which leads to the cure of the disease, thus affecting your health.
How can such good gasoline appear in irrelevant engine oil?
Students who are familiar with the working principle of automobiles should know that there will be a certain gap between the engine and the cylinder wall, so when the engine is injecting fuel, it is inevitable that there will be residual gasoline hitting the cylinder wall. This situation occurs that gasoline in winter is not easy to atomize, while Honda 1.5T engine has unreasonable fuel injection setting and position, so the engine will inject these unburned gasoline into the crankcase to form fusion when the piston moves, which will eventually lead to an increase in oil level.
The second reason is Honda's 1.5T Earth Dream Engine. This 193 horsepower machine can be regarded as the golden signboard of Honda's products today, and the excellent power experience born from it also makes many Honda products including Civic enjoy the reputation of "civilian coupe".
To obtain considerable power output, the first thing to do is to improve the quantity and quality of combustion. In order to realize these two things at the same time and let consumers dream of "super running", Honda has applied many advanced technologies to this engine. The most intuitive thing is to increase the fuel injection to make the engine do more work, so it is inevitable to scrape the residual gasoline into the crankcase. At this time, it is only necessary to raise the oil temperature and volatilize the remaining gasoline.
But the key point is that domestic consumers' car habit is often 10-30 minutes to drive to their destination, which causes the oil to cool before it can heat up. In this way, there is not much chance for gasoline mixed in engine oil to volatilize, and over time, the fuel dilution phenomenon of engine oil becomes more and more serious. At the same time, in sparsely populated Canada and the United States, some Honda models have also experienced the same increase in engine oil, but the degree is obviously much slower than that in China. Obviously, Honda has not done well enough in the adjustment of "localization".
Then how did Toyota's oil increase come from?
Looking through the official website pages of Asian Dragon/Camry engines, it is not difficult to find that their 2.5L power engine has an ultra-high thermal efficiency of 4 1%, which is the highest thermal efficiency power machine in the world. The so-called thermal efficiency simply means that burning the same proportion of fuel produces more mechanical energy, which brings more power and better fuel economy.
"Burning the same proportion of fuel produces more mechanical energy", your products, your fine products. ...
Is this ultimate pursuit of higher combustion ratio similar to Honda's practice of increasing power? At the same time, we expect that the fuse for the increase of engine oil in this double engine is similar to Honda's "engine oil door", that is, the weather is cold. After browsing the related car owners' posts in cycling circles and forums, it is further proved that our ideas are not groundless.
It is not difficult to see from the screenshots of the cycling circle and the forum that most of the feedback items of the owners have words such as "gasoline smell" and "oil is expressed to the upper limit". At the same time, the collective feedback from car owners in the north also reflects from the side that Toyota 2.5L dual-engine power will have the same quality defects as Honda's "oil valve", that is, the machine is poorly sealed and the gasoline is not fully burned, which leads to the gasoline being pressed into the crankcase and the oil level rising.
Why does it only happen on models with dual-engine power? In fact, we only need to understand the working principle of Toyota dual-engine hybrid.
At low speed, the motor will replace the engine to provide power for the vehicle, the engine in standby state will not have a chance to work, and the gasoline remaining in the cylinder body will not volatilize. If it is difficult for Honda owners to volatilize gasoline after driving the engine for 30 minutes, then the efficient "mixing" of Toyota's dual-engine power further squeezes the volatilization space of gasoline in the engine, thus aggravating the phenomenon of increasing engine oil.
Coincidentally, the winter of 20 19 to the spring of 2020 happened to be the first winter that Asian Dragon and most Camry and ES300h spent in China. The "clustering effect" formed by the owners of three cars is also the fuse of the increase of Asian dragon oil, and it also conforms to a time law from using the car to finding the problem. Of course, the specific reason for this incident is still subject to the official release of Toyota.
What should I do?
Although the concept of increasing engine oil was known to the public after Honda introduced it, it did not care about after-sales treatment. In the face of car owners' rights protection, Honda just stopped selling 1.5T CR-V models, upgraded the ECU program and revised the user manual. Although after the introduction of the policy, the phenomenon of Honda's oil increase shows signs of improvement, but the method of treating the symptoms rather than the root cause still makes many Honda car owners dissatisfied.
And what should Toyota do? Before there is an official response and official policy, we can only appeal to car owners who use 2.5L dual-engine power to pay close attention to the oil level of their cars and use them with peace of mind when the oil level is normal. If the oil level is abnormal, go to the 4S shop for targeted inspection or maintenance as soon as possible, and don't throw sesame seeds and melons for small money.
Write it at the end
From the fiery product reputation of TNGA institutions to the excellent evaluation of many collision detection institutions around the world, it is not difficult to see that Toyota's sincerity for this generation of products far exceeds any previous period. Whether it's the entry-level Lei Ling/Corolla or the flagship Asian Dragon /ES, their evaluation in consumers' minds has also changed from greasy and moderate to young and easy-going, which is destined to be hard-won for Toyota itself.
The occurrence of this oil increase event will be a big test for Toyota and even Toyota products, and also an assessment of Toyota's handling of product and user relations. The "engine oil door" pulled Honda's reputation down from the altar. If Toyota follows the script again, then Toyota's current product strength and past reputation are doomed to be destroyed. At this point, we only hope that Toyota can respond as soon as possible, come up with a solution to this oil increase incident, and give all 2.5L twin-engine owners a satisfactory explanation.
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This article comes from car home, the author of the car manufacturer, and does not represent car home's position.