“How long will the 1.8 TSI engine last, which consumes 1 liter of oil for 500 kilometers? I have a Skoda Superb, bought from the salon. The engine took oil from scratch, but within reasonable limits - about 0.1 liters per 1000 km. In the official service, in response to complaints, they replied that this is normal, it should be so. There is enough power, fuel consumption is normal, but oil ... Only during acceleration, when the pedal is completely sunk into the floor, you can see a little gray smoke behind the car. At 82,000 km, the failed ignition coils and spark plugs had to be replaced.

I have tested various oils. First 5W-30, then 5W-40. However, oil consumption was consistently high. The car was bought in 2009, which means it is no longer under warranty. Replacing rings, pistons and connecting rods at my own expense does not smile at me, since the cost of such an operation is very high "- the owner of the Skoda Superb shared such complaints at one of the automotive forums. Similar messages can be found from Volkswagen, Audi and Seat owners.

Or here's another post: “I have the same problem. The car has a mileage of 107,000 km and has been in service since yesterday. The turbine does not take oil (checked). I asked to disassemble the engine and clean everything inside: rings, oil seals and so on. I add that the engine consumes 1.3 liters of oil! "

These are just two of several hundred, if not thousands, of VW car owners who complain about defective TSI and TFSI engines. Basically, we are talking about engines with a working volume of 1.8 and 2.0 liters. Although according to the WV position, if such a problem exists, then it only applies to 2.0 TSI / TFSI engines. Moreover, the number of such cases is growing at an alarming rate from year to year, but the manufacturer does not change his view. It sounds something like this: “We have created millions of cars with these engines. The problems you are talking about concern only individual instances. These are not even percentages, but their thousandths. There can be no question of any constructive miscalculation. Each such case is considered individually. "

But is it really so? Or is it just a postponement of the repair so that the owner solves the problem at his own expense after the end of the warranty, saving the manufacturer from unnecessary costs?

It turns out that in fact Volkswagen has already diagnosed and in 2011 modernized some of the components of the problem engines. Despite this, no mass service campaign was organized, leaving the owners the only choice - to repair the engine at their own expense. It is possible that the German concern was afraid of a large number of customers who would want to take part in the action, although the problem bypassed their engine.

Before the onslaught of work, the official services raised the price tag. The estimated cost of a comprehensive and effective repair is about $ 5,000. Too much for a car that only costs 2-3 times more.

Some VW Group car owners, trying to solve by touch the mystery of the disappearance of oil, together with independent mechanics, threw out thousands of dollars to repair heads and replace: valve oil seals, various seals, gas distribution mechanism, turbines and others.

Still, several people decided to disassemble the lower part of the engine. The inspection showed that the cylinder walls do not wear out with a run of about 100,000 km - the parameters are within the tolerance limits provided for the new engine. Further examination revealed that the pistons of the TSI engines were not only short and light, but also equipped with an oil scraper ring that was too thin. It is these rings that are responsible for the entry of oil into the combustion chambers. It is normal to "let through" a small amount of oil. But 0.5 liters per 1000 km is already a lot. With such an oil consumption, many owners of old cars are already rushing to service for engine overhaul.

The rate set by the manufacturer (0.5 liters per 1000 km) can rather be seen as a desperate protective measure against annoying and angry customers. High oil consumption damages the environment, the owner's wallet and the engine itself. Against the background of the problem, some are trying to switch to cheaper brands of oil, which further exacerbate the problem.

“In a car service all the oil was drained from the engine, then the set amount of new 5W-30 oil was poured. After 115 km, the service again drained all the oil and weighed it. After calculations, it turned out that the engine takes 0.465 liters per 1000 km, and this, as you know, is within the normal range. " This is how one of the owners of the Volkswagen Group car describes the method of measuring the appetite of the motor.

The piston ring kit is inexpensive - a few hundred dollars maximum for the highest quality product. If we were talking about the usual replacement of rings, then all problems could be solved relatively quickly. In the case of the TSI, replacement is not possible because VW realized that too thin rings were ineffective and ceased production. Instead, he proposed a new piston model equipped with normal rings, but not compatible with the old connecting rods.

On the left is the old piston, on the right is the modernized one.

The repair will require replacing all pistons with rings ($ 900), connecting rods ($ 800), bushings ($ 60) and numerous parts. The total parts bill will be around $ 2,000! Audi, Volkswagen, Skoda and Seat customers will feel cheated. Not only did they purchase a car with a defective engine, for which it is impossible to purchase the originally installed parts, but they also have to purchase modernized spare parts at absurdly high prices - higher than market prices!

In theory, a repair in a good independent auto shop with original parts purchased from VW officials would cost around $ 2,500. But in practice, it comes out much more expensive, because, among other things, it is necessary to replace the timing (there are also problems with it) and to prepare the crankshaft for the installation of new liners. All this costs a lot, but it is still cheaper than in the official service.

However, there are also cheaper ways to reincarnate rings. Savings come from the installation of old pistons and connecting rods. To do this, the block is disassembled, and in the defective pistons the size of the oil scraper ring groove is increased to "normal". Then a new ring is installed.

The total cost of such repairs is much lower - only about a thousand dollars. And the epics with oil consumption and blue smoke come to an end! But how long such an engine will run, no one knows. After all, no one has tested the strength of the pistons, refined in the process of revision. Pins and cranks remain old. Meanwhile, VW in 2011 changed the design of the piston in TSI engines. Probably not without reason, these parts have been reinforced.

So why doesn't the German concern take over the entire cost of repairing faulty engines? He does not do this either in Europe or in the United States, where the concern had the misfortune of facing a collective complaint from the owners of the Audi A4, A5 and Q5. In September 2014, the German company lost the civil suit. Each of the potentially affected 126,000 customers can now ask VW for a free repair. In the interests of owners, the engine warranty has been extended from 4 years / 50,000 miles (80,000 km) to 8 years / 80,000 miles (128,000 km). According to VW / Audi representatives, this is a completely different story, as engines in the American market are structurally different from those sold in Europe. The argument is pretty dubious, as are the rings in TSI motors.

The car owner must know the structure of his car, be able to track not only the consumption of gasoline and replenish its stock in time, but also other indicators that affect the operation of the car. Consider why the consumption of automotive oil depends, why the oil level may decrease, and we will show you how to select the right engine oil.

Modern car companies point out that there are many reasons that lead to increased consumption, or a decrease in the level. Only the car owner himself is able to assess what is the consumption of lubricating oil in his car and for this there is a special dipstick.

Using this dipstick, the driver must independently check the presence of the oil level in the engine and monitor its consumption.

One of the first reasons for the increase in consumption, according to experts, is the poor quality of the oil.

The ability of an automobile oil to neutralize acidic elements that are formed during the combustion of fuel determines the quality of the motor oil.

Promotes high corrosion protection of engine parts.

Good quality oil should successfully flush and disperse the various constituents.

The most important task of engine oil is to minimize and prevent wear on engine parts.

The second reason for the increased oil consumption is oil waste consumption.

Getting into the combustion chamber simultaneously with the fuel, the oil-fuel mixture burns.

Therefore, each internal combustion engine, depending on the specifics of the device and on the operation of the unit itself, produces a (partial) consumption of lubricant.

In principle, a lubricant in a cylinder-piston group is used to reduce friction between moving surfaces.

In addition to reducing friction, oil cools parts and serves as a seal between these parts.

During operation, lubricant gets on the surface of cylinders and piston rings, excess oil is removed by oil scraper rings.

After removing the excess, only a thin oil film remains, this very film simultaneously burns with fuel in each cycle of the car engine.

The presence of waste can be diagnosed visually by looking at the exhaust.

In the presence of fumes, blue smoke appears in the exhaust, and if only high-quality fuel burns, then this smoke is not visible.

But, do not be confused with black smoke, black smoke is the wrong injection job.

If an oily black edge appears at the ends of the exhaust pipe, this is a symptom of waste.

There can be several reasons for oil burnout and it is quite difficult to find out this reason, for this you need to open the engine.

Experienced drivers are familiar with several simple and cheap methods of waste management.

To do this, it is necessary to determine how much oil should be consumed in a given engine.

In other words, it is necessary to determine the oil consumption for a particular engine.

In addition, the driver should be aware that oil consumption directly depends on the driving style of the car.

The more often you use high revs while driving, the more oil in the car engine will burn out.

And the oil consumption rates for your car are reflected in the car documentation.

High oil consumption, why does it burn

Increased oil combustion is due to the following reasons:

The engine of the car is filled with oil that is not suitable for this car. If the oil has a low viscosity that does not correspond to this type of engine, it will burn. If the oil has a high viscosity, it will accumulate on the inner walls of the engine and there will also be an increased oil consumption;

If the oil reflecting caps are worn out, and they can wear out due to a sharp temperature drop or due to an unsuitable oil, increased oil combustion occurs;

Worn oil scraper rings can also cause oil combustion. To remove this problem, you can de-carbonize the rings or replace the rings and overhaul the engine;

The cause of oil combustion can be the development of the inner surfaces of the cylinders;

High pressure of crankcase gases, or compressor breakdown leads to increased oil combustion.

High oil consumption

In order to determine the question of whether the oil consumption in your car is high, you need to know which engine is on your car.

Each engine has an individual oil consumption per 1,000 km. Small cars, compared to high-power engines, consume much less lubricant.

It must be understood that any engine, regardless of its operating time, will consume oil.

And this is not a whim of the car, it just works on it. Oddly enough, professionals sometimes advise to just add oil and not rush to overhaul.

The following factors can affect lubricant consumption:

Increase in the clearances of the cylinder-piston group due to wear of the constituent parts;

Increased pressure in the crankcase;

Incorrect adjustment and tuning of the engine;

The tightness in places of seals and rubber hoses is broken;

Aggressive driving;

The correct oil must be selected;

The oil must be of high quality;

All periods of consumable replacement must be observed.

High oil consumption due to leakage

If the driver detects an oil leak, it must be repaired.

And oil from the engine can leak from the valve cover gasket, from under the cylinder head gasket, from under the crankshaft oil seal, from under the camshaft oil seal, from under the oil filter gasket.

If oil flows from under the valve cover gasket, and it is on top of the engine, oil leaks will be visible on the side walls of the unit.

A lot of oil will not leak, but it is better to change the gasket.

Oil can leak from under the cylinder head gasket, which is also on top of the engine.

How many cylinder heads and gaskets. If necessary, the gasket must also be replaced.

If the gasket between the holes in the cooling system and the working cylinders is punctured, oil can enter the cooling system.

The engine looks dry and the oil is gone.

You should pay attention to the coolant, if oil gets into it, the coolant will become cloudy and change color, the volume of the liquid in the expansion tank will increase.

If oil gets into the coolant, the oil in the engine will begin to foam and foam can be visually seen on the inner surface of the filler cap, through which oil is poured into the engine. All problems with cylinder head gaskets must be solved immediately after detection, otherwise the engine itself can be damaged.

If there are spots on the inner surface of the crankcase and there are leaks at the bottom, then the oil seals are punctured and must be replaced.

Sometimes the oil pan gasket can be damaged, so when changing the oil, use a jack, remove the protection and check the oil pan gasket.

If you find oil leaks at the bottom of the engine, the crankshaft rear oil seal may be leaking. This oil seal is located at the inlet of the crankshaft to the gearbox; to replace it, you will have to remove the gearbox.

The oil consumption of any engine is not normal. The reasons, remedies, etc. are described in the article.

The content of the article:

When the engine uses up oil, this is a reason to think. First, let's talk about additives, top-ups and more.

Oil additives

According to most manufacturers, oil additives can literally cure your engine of anything, including high oil consumption. BUT so far no one has really told how this is achieved. Reduced friction, extended engine life. Additive manufacturers always advertise values \u200b\u200bthat cannot be measured. This means that it is impossible to prove the fact of deception.

What we have in practice. Some oil additives do create a certain layer on the parts, but this very layer has extremely low thermal conductivity. For example, for pistons, this is fraught with the occurrence of rings, more on that later. The rest of the parts are not as susceptible to overheating, but it is definitely not useful for the motor.

High oil consumption: reasons

We exclude leakage, this is not our case, it is not consumed by the engine, but simply flows out of it. Therefore, the engine oil has only one way - to the combustion chamber, where freedom in the exhaust manifold awaits it, or eternity in the form of coke.

In turn, there are two ways in which it can enter the combustion chamber: from above and from below.

Worn valve stem seals

This is often the reason, which is not so much the result of engine wear as its old age. In essence, valve stem seals are rubber oil seals, which, like everything of its kind, “dubble” from old age. Alas, this is the fate of each of them. It is treated only by replacing the valve stem seals.

There are times when they become not an obstacle in front of the oil, but, on the contrary, a filler neck, into which oil is constantly poured. In addition, a pinched valve may be the cause. Part of the carbon remains on the seat, the other burns to the valve stem, after which it shakes the guide sleeve and the cap itself. This happens quite rarely, but, as they say, the stick shoots once a year.

Worn oil scraper rings

Everything here rests on the rings. The crankshaft picks up oil from the crankcase, sprays it along the cylinder walls, after which it must be removed with oil scraper rings. But this does not happen, part of it remains on the walls, and then, when the piston goes up, it will be lifted into the combustion chamber. Of course, you can't lose a lot in one cycle, but if you can estimate the idle speed, then the crankshaft makes about 800 revolutions per minute, which means that 3200 cycles are performed, 1600 of which is an upward movement.

Piston ring sticking is the reason for increased oil consumption. This is especially true for engines with poor heat dissipation, such as those with shortened pistons. After the rings are buried, the situation is aggravated even more, because the oil cokes even more. Then they need decarbonization. Turbocharged engines are a separate conversation, because a worn out turbine is also an excellent funnel for pouring oil into the cylinders.

Conclusion

From all this it follows that oil consumption can only be cured by repair. In some cases, decarbonization will help, but this is very rare, because the coked ones are found only at a decent mileage, and there it is already a stone's throw from repair.

Video about the causes of zhora oil:

To 260 thousand km. our Volkswagen Passat B5 ANB 1,8T (turbo) began to eat up oil critically. The oil consumption was first 2.5 liters per 9 thousand, then 3 liters. for 10 thousand. For 4 years of ownership, the usual consumption, if not twist up to 5 thousand revolutions, fit into 1 liter per 10 thousand km. The car began to smoke after 3 thousand rpm and sometimes spit out a cloud of gray haze when idling.

In specialized respected services, they critically and persistently offered the full capital of the engine, they say, the rings were worn off, and the valve stem seals on the 20 valve engine are so small that in their absence it will not gobble up more than a liter. The cost of such a capital was estimated at 70 thousand rubles (and even more - an autopsy will show). Separately, they refused to change the valve stem seals for a cut. With a car cost of 250 thousand and the presence of delayed problems with other expensive units, this is not an option. But there was no way to buy a fresh car in the best condition after reporting 100 thousand with the same parameters and much better condition.

And so, after talking with the men, we began to eliminate the causes of the oil consumption one by one. We checked the turbine - it whistles, but oil is not yet pumping into the pipe. Further, they advised to measure the compression - if there are no norms and a strong spread, then these are just the oil scrubbers hardened (of course there is a risk of oil compression, but we neglected this). Measurements showed 11.5-11.5-12-12 (of course not super fountain, but for a 16-year-old car it is quite normal). There is oil in the glasses of candles (thanks to Transmissions and motors, which put shitty Chinese gaskets - and they also repair engines). There is a big MOT ahead and they decided to stop at replacing the valve stem seals, anyway, they are just a stone's throw away when the muzzle and part of the attachments are removed.

Found the master Nikolay from "Che service", the cost of replacing the valve stem seals with the removal of the muzzle was only 12 thousand rubles. (as a bonus, replacing the timing belt, candles, damper - that is the biggest MOT worth from 6 thousand rubles) + details. I did everything clearly, for the agreed amount. At the moment, the mileage has already amounted to 7 thousand km., I keep the oil level at the maximum, about 600 grams are topped up. At the same time, he turned up to 5 thousand revolutions on the track, overtaking trucks.

Thus, our Passat B5 (VW Passat B5 1.8T ANB) eats up oil when it reaches 260 thousand km. mileage of 3 liters per 10 thousand km, with normal compression in all cylinders, it is commonplace because of the stiffened valve stem seals. Replacing them made it possible to get rid of the gray haze and significantly reduce oil consumption. Moreover, the cost of these works is incommensurably lower than the total capital. Of course, it will not absolutely solve the problem, but even on this engine, oil consumption is allowed within at least a liter per 10 thousand km. mileage ...