My Highlander, which I bought in February 2013, has now driven more than 110,000 kilometers. At the beginning of the year, it was discovered that it began to burn oil, and every 1,500 kilometers needed to be replenished with one liter of oil. And the situation is getting more and more serious, even if the 4S shop carries out the whole process of maintenance, uses 5W20 fully synthetic engine oil, and regularly uses imported fuel additives, 5000 kilometers for maintenance, but still can not prevent the situation of burning engine oil. The following experiences are from the beginning of the year, and now it is the end of the year, so I would like to share my experience with the whole process.
I learned that there are a lot of 2The same problem occurred with the 7-displacement models, the Highlander's, the Lexus are all this engine. In order to solve this headache, I had to go to the 4S store frequently. While I can't pinpoint the source of the problem, this issue does bother me a lot.
On two long drives, I couldn't find genuine Toyota oil because I didn't have the oil with me. In desperation, I could only buy Great Wall engine oil for emergencies. Every time something like this happens, I change the oil as soon as possible to avoid damage to the vehicle. This experience left me feeling very frustrated and irritated, but unable to do anything about it.
This story tells us that the problem of burning engine oil in vehicles can be common and brings a lot of inconvenience and annoyance to our lives. We need to pay more attention to the care and maintenance of vehicles, identify problems in time and take measures to avoid problems from escalating. At the same time, it is also necessary to call on automobile manufacturers and relevant departments to strengthen the research and supervision of vehicle oil problems, so as to provide consumers with more reliable and convenient solutions.
Check it out at the store.
By chance, I learned that there was a Highlander with the same engine that had solved the problem of burning engine oil without overhaul, and I was quite surprised at first. I thought it was a design or oil problem, but after Xi and research, I gradually understood the reason. I realized that the oil burn was not an oil or design problem, but rather a failure to maintain the oil circuit during normal maintenance.
I used to think that the engine oil was original, 5000 kilometers at a time, there should be no problem. However, as I learned more about the oil circuit, I realized that the fuel circuit can deteriorate, and poor combustion will lead to an increase in engine temperature. The operating temperature of the engine oil is around 110 degrees, and poor combustion will increase the oil temperature to 115-120 degrees. Although the results of these changes can not be seen in the short term, the quantity changes to the qualitative changes, and the oil in the small holes of the oil ring will scab and stagnate after a long time, resulting in oil burning.
Here I would like to share an experience. No matter what kind of car it is, you must develop a good Xi of cleaning the oil road. This Xi 4s shop has not been emphasized, this is the lesson I learned in exchange for burning engine oil. I am here to share it with you today, and I hope that those who have not burned engine oil will pay attention as soon as possible. It is best to use PNF additives to clean the oil circuit for domestic fuel, and those imported have no cleaning effect on domestic fuel.
In addition, clean carbon deposits do not change the fate of burning engine oil, mainly the temperature at which it burns. So, don't think that if you don't clean the oil circuit, you can solve the problem by cleaning the carbon deposits in the end, this is not okay.
After research, I found that my car may be caused by forced ventilation valves or piston ring cards, and I have never heard of a car with a problem, and the number of kilometers is less than that, so I will not consider the valve oil seal problem first.
Before repairing, I first went to 4S to change the PCV check valve, to 4S because the accessories are the original, the accessories themselves are not expensive, and they are easy to use under the premise of ensuring the original, but this accessory is not a conventional replacement method, remove the tire and replace it, it will not be the shop, you have to change the assembly, the total achievement is too expensive, I only change this valve, only more than 100.
This thing will consume engine oil if it breaks down within 4 years, and my experience is that don't check it, just replace it. After changing the oil consumption, I also tested the cylinder pressure greater than 8 according to the suggestion, no problem, as long as the cylinder pressure is enough, there is no need to disassemble the engine for overhaul. After changing the valve, I ran 2 tanks of oil, or more than 1,000 liters of oil, which was slightly better than before, and then it was determined that only the piston ring burned the oil. So I started to repair it with the company's general burning oil. The most important thing here is to replace the original PCV valve and test the cylinder pressure, and do not repair the cylinder pressure if it is not enough. Based on the experience of my riders, I improved the repair method and carried out a carbon deposit cleaning in the cylinder first, so that the repair will be faster later.
Carbon invincible can be used without it, the repair agent can be cleaned very clean, I just like to operate it myself, first used a carbon invincible, and the true color of the piston will come out immediately.
Add a repair agent to the oil, a maintenance cycle, and the maintenance cycle is synchronized, this is safer, the speed of the car can run at will, unlike idle cleaning oil and other oil repair agents, run hundreds of kilometers to change the oil. This is synchronized with the service interval, which means that it is not harmful to the engine.
At the same time, three restoratives were added to the tank. I know, this sounds amazing, and the dosage is so large that you guys might be confused. But rest assured, this is not a PEA, and if the usage is so large, the vehicle would have been inoperable for a long time. I'm pretty sure it's another fixative, and you'll see my fix changes later, and you'll understand.
One tank of oil is followed by a second repair, or three fuel repairs at a time.
There may be some errors in the measurement, which is measured during the hot car. In the middle process, we only need to add three repair agents to the fuel tank and drive more.
Do this for 6 times.
Change in the dipstick after the third repair.
This is tested before the cold start and should be more accurate. After the third repair, the oil has not changed much from the original. I suspect that the second oil test was under hot car conditions, and the oil did not flow back into the oil pan, resulting in inaccurate results.
To make sure it works, I did a fourth fix, and I won't repeat it this time. After the repair, it was exactly 5,000 kilometers for maintenance.
Before maintenance, I looked at the oil dipstick, it was still at a high level, there was no consumption, a total of 6,000 kilometers, and I was very satisfied with the repair four times. It used to be 1,500 kilometers to the bottom
Because the use of 2 + 12 **, but also send six more fuel, exactly two amounts, it is recommended to use directly, six tanks of oil in a row, this will be more thorough, because the ring can not be seen, 6 times must be more thorough than 4 times, and the next two do not have to pay the cost directly.
Summary. After using the company's general burning engine oil repair service, the process of six tanks of oil went smoothly, and 6 repairs were sent, but it is recommended to carry out two more repairs to achieve six times, and it is said that six times is the number of times that the piston ring of this car is completely dredged and repaired. Therefore, it is recommended that if the inspection is completed, it is confirmed that it is a piston ring problem, and the repair is done with 2 + 12 **, and there are an additional six, which is exactly the repair of six tanks of oil, which is much more suitable than buying a single group group, more than a thousand repair costs, and the piston carbon deposit is also clean, and the carbon removal alone is hundreds larger.
Solving the piston ring is a few hundred dollars in cost. At the end of the year, two maintenance cycles have passed, and each time the maintenance is carried out, the oil loss is around half a liter, which should be considered OK, and I maintain 7000 kilometers each time. There are many things in science and technology that we cannot understand, but this does not mean that they are useless. Let's just say that my repair this time, I didn't disassemble the parts at all, I didn't burn the engine oil, and the eyes of the 4S store supervisor were green, I couldn't believe it.
I can't completely disbelieve it, because I would go to them every once in a while to buy engine oil, but I didn't go for a long time, and finally went directly to maintain it, and they must be skeptical. That's all I have to share my experience with. I hope it can help our big Han riders and other riders. Because this method according to my understanding can be used on any car that burns engine oil because the piston rings are stuck. Also suitable for Lexus 2The engine operation of the 7 is the same.