How to solve the phenomenon of burning engine oil in German cars?
I personally participated in the automobile maintenance industry in 2003 and 2004. I had a German car in 2005. During this period, all German and Japanese cars repaired, maintained and opened were basically made in Chinese mainland, but the imported V 12 was never made in China. Both V8 and V6 have been done. From Audi to A6, it can now reach ***4 models. The earliest Audi 100, later imported some A6 generation and domestic A6 generation. The earliest Audi 100 and 2.6E had the most contact. We have been maintaining several sets of this model, and two sets are still in use. Counting, the age of the car is more than 15, and the mileage is almost 20W km. This car is really difficult to drive. Generally speaking, the gearbox of about 20W km will not work, and it will slip. The power drop of the engine is obvious. However, as long as you find an old disassembled part in Guangdong, the gearbox and the engine are all early 2W, and it can run for at least 4 years after installation. It turned out that the powertrain of a car was changed in this way, and it ran for almost 30W kilometers, and finally arrived at 16. The owner really didn't want the annual inspection, and sold it for almost 5W. I think there is something wrong with buying a car when I sell it, but it is hard to say that it is not worth it. The interior of the car was decorated once, mainly because the leather of the seat was redone, and other plastic and wood grain parts did not move, just cleaned. After the replacement, the power performance is still very strong. Generally speaking, it is more durable than the contemporary duke and crown.
Perhaps the most controversial issue now is the domestic second-generation A6. The first generation A6 all used 5V machines. Judging from the 1.8T, 2.4 and 2.8V6 machines, there is so-called "burning engine oil". But how to explain this "burning"? Audi's car of this generation is a general-purpose oil grille, the model is 56 1B (domestic model is 56 1C, and POLO uses 56 1A). Early production in Germany, after 2005 to Austria. At the same time, this oil grille is common to all the 5V machines of Volkswagen's subsidiaries, and can be used from 1.6-2.8. Brands include Volkswagen, Audi, Sokeda and SEAT. So basically the whole public has the so-called "burning engine oil". Engine oil leaks into the engine cylinder through the engine piston ring and burns with it, which is called "combustion engine oil". This phenomenon exists in all 5V models, but it is not obvious in contemporary Toyota and Honda models. Why this happens is related to the design concept of Volkswagen and even the whole German car factory. German cars tend to be designed for high-speed driving, and the common working range of engines is 2500-4500 rpm. The reason is well known in German road and traffic regulations (even in Europe). Because the common working speed of the engine is high, the lubrication and cooling of the engine require unusual performance of the oil. Especially the piston ring, if the sealing performance is like Honda's, it is basically leak-free. Then the working life of the engine piston ring is greatly affected. Therefore, the 56 1B oil grid is used in the whole 5V series model, which is characterized by large oil storage capacity. The 4-cylinder engines of 1.6 and 1.8 need 4.5L oil reserve, and the 0.5L more than the general 4-cylinder engine depends on the oil grid. You can compare the fuel quantity and fuel grid size of the 4-cylinder engine of Japanese and Korean engines before and after 1997. The smallest Japanese machine is 4L, about 3.7L, which is quite full. This amount of oil can't leak at all. If it leaks, the engine will explode. Volkswagen's 5V machine is allowed to consume 1000 km /0. 1L, and the maintenance mileage is set at 7500 km. Basically, it is difficult to give an oil alarm as long as 4.5L oil is added as required. There is also the brand that uses engine oil, which also determines the consumption of engine oil. From the comparison of several major brands, under the same label 5W-40, Shell's total synthesis is the thinnest, followed by Mobil's total synthesis. Volkswagen's 5V model adopts full shell synthesis, so it is difficult to ensure the fuel consumption of 0. 1000 km, usually 0.2L Mobil has a better effect. I personally used 5KWkm and maintained it five times. 10000 km fuel consumption is 0.7-0.8L, and the reaction of the northern counterparts is that FOSS engine oil (that is, the engine oil developed by Volkswagen itself) is ideal. The fuel consumption of Super Titan 5W-40, 10000 km is only 0.3-0.5L However, because the southern market is not very blessed with the driver's oil, and the store has never been there, it is impossible to get the data. The main problem of engine oil entering the cylinder for combustion is that black colloid will appear in the throttle, which will affect the working efficiency of the engine and increase fuel consumption for a long time. But there has never been an example of endangering the life of the engine. But this point has always been suggested in Volkswagen's car manual, that is, it is recommended to drive at high speed. The high speed here refers to the gear shift of keeping the engine at 2000-2500, not driving below 1250. In fact, as long as you can run at a high speed of about 1000 km per year, you can solve the problem of throttle sticking. So the so-called "burning engine oil" is not a quality problem, but a design direction problem. In addition, safety considerations have also been made in terms of oil capacity.
A new generation of Audi A6, due to the replacement of most engines. Only 2.4 30V machines were kept. Judging from the 3.2 machines we have repaired, there is basically no "burning oil". 2.0T There is no business because there are few cars. However, judging from Magotan's 1.8TSI, no obvious fuel consumption was found. Basically, they all belong to the normal level of 3000 km/0.1L. In principle, the dent in the oil meter shows the capacity of 0.2L oil. The difference is 0.2L So if you have a Volkswagen, you can have a look for yourself.