Engine oil for cars with large mileage. Application of engine oil with large mileage Which oil for cars with large mileage
Good oil The key to the long life of the engine. Car Engine internal combustion needs to high-quality lubricant. A number of operational properties are depends on this system, such as expenses fuel mixes, the number of kilometers passed between overhauls and so on. The friction reduction efficiency directly depends on the state of the engine system, as well as the type and quality of oil, which is used in it. Consumables manufacturers create different types Oils that are required in a particular situation. Automotive companies, in turn, indicate with which component the operation of the machine will occur best.
As for the use of oil on a new car, this issue is quite simple to solve. The instructions for the machine always specify the types of oil, transshipment and replacement guide and answers to various questions. Moreover, new carLocated on warranty service, allows the driver to contact the service at any time, learning what composition to choose. Unfortunately, it almost does not apply to cars, which served for many years and have a big mileage. In this case, the topping and replacement of oil becomes a more complex event.
What mileage is considered big
First of all, it is necessary to determine the terminology. The phrase "big mileage", of course, relatively. It is necessary for the concept of how often the engine needs major repairs and at what a name of the odometer he falls into the risk group due to wear. There is no definite indicator in numbers - it is impossible to say exactly what mileage is large for engines in general. As a rule, for the aggregate of domestic origin, large mileage is from 100,000 kilometers. At the same time, if we talk about some japanese engines, even 10,000,000 kilometers can almost not affect their condition. On average, imported engines capable of passing from 150 to 200 thousand kilometers without the need for major repairs and risk to break due to wear. If the engine of foreign production, with such a run, has problems, then it is most likely incorrectly operated - either flooded butter, or the procedure itself happened incorrectly.Features of oil use in engines with large mileage
In order to understand what is happening in the car's running system with big mileageAnd also to choose the right composition in such a situation, it is necessary to know the principle of operation of lubricant in the engine. This is especially important if the car has a big mileage.In the engine that works for a long time, the details begin to wear out.
First of all, it concerns the cylindrophone group. Its wear affects compression, therefore, reducing fuel efficiency Engine operation. To maintain the same dynamics, he needs more fuel. In such situations, it is allowed to transition to synthetic oils, because they have a higher resistance to high temperatures, and also evaporate slowly. Their composition provides a better seal - such a film allows you to reduce the negative effect of wear, normalizing fuel consumption.
In addition, with the wear of the cylindrophone system, the amount of combustion products falling from the chamber in Carter increases. The composition under the influence of high temperature and interaction with aggressive substances begins to oxidize (especially if the driver uses cheap oil and fuel), which leads to loss of additive efficiency. The engine begins to accumulate combustion products and corrosion appears in it. Synthetic oils provide protection against oxidation - better and long, rather than organic.
Synthetic oils help to solve the issue with a "cold" start of the engine. Temperature properties of such lubricants allow you to work with an immentable system - their higher than that of organic, fluidity and less viscosity at low temperatures allow the crankshaft and other fuel system parts are easier to perform their role. Synthetic oils save fuel when starting and allow it faster. In addition, the start of the engine until warming up is one of the main reasons for its fast wear.
It is known that all engines have several stages of wear:
- Period of step;
- Established mode;
- Emergency condition.
Nagar, which is formed in the engine, with time leads to a deterioration in the mobility of internal parts. In the worst case, a thrombus may form, which completely paralyzes the operation of the engine. In the rest of the same situations, fuel consumption will increase many times, and power will fall. Some engine oils contain additives that prevent the formation of deposits. They also allow you to wash off an existing precipitate. Active substances of additives are held in oil, lingering on the walls of the mechanisms. The use of such synthetic oils allows economy to spend the same volume, less often need a plot.
In the near future automotive market Cars that have a system for reducing waste toxicity should appear. Of course, to implement such technology, a large amount of engine oil is needed - among other things, it must contain appropriate additives. Advertising from Shell provide control squeeze filterthat reduces waste emissions into the atmosphere.
How to extend the service life using a special oil
Many car enthusiasts who own cars with great mileage are interested, whether it is possible to extend the service life of the engine using a special composition. Of course, no one pleases the perspective of fast overhaul and replacement of the chassis. Unfortunately, "medicines from old age" for engines does not exist - this is the answer from all companies producing motor oil. The only advice that can be given by car owners with a large mileage and worn engine - use higher viscosity lubrication. Thus, if the engine manual provides for the use of 5W-40 oil, then it is allowed to replace it with 5W-50. In any case, this solution will be only a temporary compromise that will only help normalize the operation of the engine, but not its condition.
Photo: semi-synthetic oil
Replacing the oil on a more viscous has its advantages and disadvantages with a large wear of the engine. Such a procedure allows you to protect rubbing parts in the motor, while not creating a thick film. The best protection ensures the most "durable" composition, and not the most "fat". In the modern market, you can find oils with additives that make the film insisted. They are obliged to ester, which, in turn, have natural magnetic properties, providing a solid film.
At the same time, a more viscous composition is necessary, taking into account the fact that the gaps in friction pairs are increased. If you pour lubrication with unsuitable properties, then it is spent on the avgar. Oil viscosity coefficient must be changed as the engine wear. It is for this reason that no manufacturer of cars or engines never indicates specific numbers - we are always talking about the range of viscosity coefficients. It is ultimately not recommended to go beyond the range prescribed by the manufacturer. Each engine is designed to work with a defined oil, so the use of unsuitable can harm the system and even make it stop working.
Photo: Synthetic oil
However, some experts are confident that the use of more viscous composition leads to violations in the operation of the motor. A pump that swings liquid is not ready for working with a lubricant of another viscosity, so begins to wear out. In addition, it creates the risk of oil starvation in certain areas of the engine, which leads to the failures and output of the engine. It is these arguments that opponents of changing the viscosity coefficient of oil over the operation of the car. First of all, it is necessary to make sure that this or that oil is approved for use by the manufacturer. In addition, in all high-quality compositions in our time, additives protecting fuel system From wear and damage - they are equally well shown themselves both in new engines and in those that have a big mileage.
How to choose a motor engine oil for a large mileage
In order to determine which lubricant is best suitable for a car, first of all it is necessary to study the requirements of the manufacturer of the machine. A guide to the vehicle must contain information on specifications, admissible viscosity coefficients and other properties. Thus, first of all it is necessary to look into the manual.Type of engine oil
On the principle of production of lubrication are divided into three types:- Mineral (organic);
- Synthetic;
- Semi-synthetic.
When choosing a type of composition, you should guide the recommendations of the manufacturer. Each engine has an individual design and principle of operation, which means that the replacement even on expensive and high-quality synthetic oil may not just give advantage, but also to destroy the motor.
As for the semi-synthetic composition, it is also suitable for use not in each engine. The choice in its favor is made due to greater quality, but it also has a greater fluidity. This property can negatively affect the engine on which the use of semi-synthetic is not provided. Especially critical will be the consequences for engines with a large mileage.
Photo: Mineral oil
For car engineswhich have a mileage of about 100,000 kilometers (especially if the unit is domestic), the use of mineral composition is recommended. In addition, it has a smaller price - it allows you to save on frequent topping. old engine.
Motor oil additives
Almost all modern lubricants for engines are produced with the content of certain additives. Molybdenum disulfide and its analogues are best suused for motors with a large mileage and its analogues to reduce the degree of wear of the unit. Molybdenum disulfide is able to fill the space in the engine at normal operating temperature The latter. The holes formed during the operation of the motor are compensated by adding. In addition, the composition against wear is recommended to use even in new cars, adding it every fourth-fifth replacement.Oils with disulfide Molybdenum or its analogs are almost all modern producers. However, it is recommended to use products for safer use. famous brands. They are easier to check for quality.
Marking on Motor Oil Packaging
It is difficult to determine which marking matches the best engine oil with a large mileage. To do this, you can explore the manuals in which the nuances of operation of this or that engine are described. You need to look for the lubricant capacity with the corresponding marking situation.On the overwhelming majority cans and canisters, two parameters are specified - the thickening index and the viscosity index. As an example, you can consider the labeling SAE 10W-30. The first number determines the thickening of the oil. The lower the indicator, the lower the temperature ambient Allowed to operate. The second number determines the degree of viscosity, the composition is demonstrated at a temperature of 100 degrees Celsius.
Another standard, distributed throughout the world - API. Its index consists of two letters of the Latin alphabet, the first of which is invariably, is S. The more serial number of the second letter, the better quality Oil. So, for engines with high mileage, the standard SF is recommended.
Outcome
Choice best oil For the engine with a large mileage - a complex and ambiguous procedure. It should be borne in mind that no composition can return the previous state to the wornized engine, but it is capable of normalizing its work (including mixtures consumption) for a while.Replacing motor oil may seem easy for you, but it is not.
As soon as you look at the quality mark, you will see that the oil complies with the standards of the American Institute of Motor Oil (API). In addition, on the canister you will find more than 2 distinctive quality sign. The second sign, for example, is the "SL" marking. SL oils belong to the group of laboratory experiments, including the last series of control of high-temperature additives.
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Your main task is a selection of viscosity, because it determines the temperature ranges of your engine.
All these labeling can be found on every engine oil canister. API tells you that the oil corresponds to SL classification (C for diesel engines). In the same place you will find the SAE marking (Society of automotive engineers), and the risk the viscosity index, which tells you that the oil passed the energy saving test successfully.
This is a rather popular type of engine oil, described above.
Why do you need a car oil
It, like blood in the human body, which delivers nutrients to cells, carries lubricant and protection - "Power" - for the engine. However, without oil for lubrication and cooling moving parts, the engine will work in just a few seconds. Thus, the oil is essential for normal engine operation. The oil for the car is so important that we even try to buy something more expensive.
Oil replacement time in cars what to do
So, this is the time to replace the oil, let's figure it out how to change it. As soon as we replace the oil, you can drive about 10,000 km by car, until the next replacement.
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Cm. Step-by-step instruction on the replacement of oil on the example of a particular car
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To produce it, you do not need to be a professional. So, with the next replacement, we must choose necessary oil Of the whole huge spectrum of the world range. What is worth paying attention to when choosing an oil for your car.
The viscosity of the oil, where it is written on the canisters.
The viscosity (fluid resistance to flow rate) is calculated 0 ° F (in the face of a number of previous "w" (winter)) and at 212 ° F (on the front side, the second number indicates viscosity). For example, it has a smaller viscosity when cold and hot operating temperatures than 20W-50. Notice, the engine oil has a property to deteriorate, come into disrepair. Thus, with correct additives, the oil is better than the spoil and pollution. Some additives are well protected at low temperatures, others, on the contrary, at high. The more stable oil, the higher the second number (10W-40 compared to 10W-30, for example).
Viscous oil, usually, seals better than liquid, and supports moving parts in the best condition. When low-temperature exploitation, oil should be resistant to thickening so that it proceeds more easily in all movable parts of the engine. In addition, if the oil is too viscous, the engine requires more energy to rotate crankshaftwhich is partially immersed in the bath with butter. Excessive viscosity may make it difficult to launch the engine. For example, "5W" oil is recommended for use in winter.
Select synthetics
However, some synthetic oils can even flow, in cold weather, so they are able to pass tests that correspond to the class 0W. After the engine earns, the oil will start warm. The second number in the viscosity class is "40" in 10W-40, for example, - tells us that the oil will remain in a viscous state when high temperaturesWith the lower second number - "30" in 10W-30, for example.
Types of oils, why so many types of oil.
Look at the shelves of automotive spare parts stores, and you will see oils intended for all types of specific purposes: high-tech engines, new cars, for example, cars with high mileage, for heavy SUVs.
In addition, you will see a wide range of viscosity. If you read in the user's manual, you will probably know that the car manufacturer recommends for a completely new car. This is not a guarantee of better fuel economy, but most of the leading brands have at least several types of viscosity that are indicated on the marking. Let's take a look at various types.
Types of car oils
Premium normal oil: This is standard automotive oil. All leading brands produce several viscosity. As a rule, or, perfectly operate at lower temperatures, 10W-30, in particular, at higher ambient temperatures.
Replacement interval
It is even more important to regularly change the oil and oil filter. Interval 8-10 thousand km / 4 months is normal. Absolute minimum twice a year.
Synthetic oils
Oils made for high-tech engines installed, for example, in Chevy Corvette or Mercedes-Benz are the full owners of synthetics. If these oils passed strict, special tests (indicated in their marking), this means that they have a higher, longer productivity in all critical areas and cases ranging from the viscosity index, ending with precipitation protection. They go better at low temperatures and support the peak value of lubricating properties, at high temperatures.
So why not everyone uses high-tech oils? Answer: These oils are expensive, and not every engine needs them. In fact, they may have some features that are needed by the car engine.
Synthetic Blend (Mixed Oils)
Oils with impurities: have a part of synthetic oil mixed with organic oil, and generally needed in order to provide protection during heavy loads, at high temperatures.
As a rule, this means that they are less than changeable, so they evaporate less intensively, which reduces oil loss and increases fuel economy. Such oils are popular with pickup drivers / SUVs, which need protection at high temperatures. And they are much cheaper than completely synthetic oils.
Oils for cars with great mileage.
To date, cars are often found with mileage consisting of six digits. If you are the owner of such a car, for you, developed special oils. Almost two thirds of the vehicles on the road have 100,000 km, on the odometer.
Thus, companies, given the interests of buyers and customers, created and released the variety of oil for most people.
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When your car or light truck has a significantly greater mileage, then putting a car in the garage for a while, you can notice several oil spots on the floor.
This often occurs before the oil replacement, and serves as a kind of shift time approach. It is possible that the crankshaft seals lost their flexibility, so they flowed (in particular, at low temperatures). In most cases, rubber seals are designed for swelling to stop leakage. But car manufacturers carefully choose their ingredients. You could also notice that there was some engine performance and smoothness as a result of the wear of the engine of your car. Also have a fairly high viscosity (even if the numbers on the container do not indicate it, there is a fairly wide range for each viscosity and running rating.) In addition, they may have even greater viscosity, as a result, increasing the index in them.
As a result: Such oils protect the gap between the piston and the cylinder is better. They can also have a higher dose of anti-wear additives in order to slow down the wear process.
Viscosity index.
Resistance to wear, with an increase in temperature, is called viscosity index. Even if the second number is good, the oil must also be stable. That is, it (viscosity) must be preserved for thousands of km. until another oil replacement. For example, oil tends to lose viscosity from the shift - sliding motion between large, installed, metal surfaces of moving parts, such as bearings. So, resistance to viscosity loss (shift stability) is necessary in order for the oil to maintain a lubricant film between these parts. Unlike antifreeze, 95 percent of which consists of one basic chemical basis (usually ethylene glycol), oil contains a mixture of several different types of base oil, some more expensive than others. Companies - manufacturers of motor oils, as a rule, produce oils of five groups, each of which is produced differently and with different viscosities. More expensive groups, with a higher degree of processing, in some cases, can be classified as synthetic. The so-called complete synthetics contains chemicals that can be obtained from oil, but they have changed to so much that they can no longer be considered natural oils. The basic oil package ranges from 70 to 95 percent of the mixture, the rest consists of additives. Does this mean that the oil is only with 70 percent of the base oil better than from 95? No because some of basic oils They have natural characteristics that leak out of their processing, which reduces or eliminates the need to add additives. And although some additives make an important contribution to lubricant, but themselves are optional. The ingredients in the additive package differ in price, as we have already spoken, but the price is only one of the factor. Some of them work better in certain combinations of basic oils, and some of the less expensive are a good choice for the mixture, due to the fact that they have popular additives. Outcome: Each engine oil has its own recipe. Automotive companies constantly come up with a list of objectives based on the needs of their customers (automakers, for example) and create oil to achieve these goals.
One of the ambiguous and not fully clarified by the numerous conversations of motorists is the engine oil with a large mileage. The fact is that the whole forest of a variety of nuances, which have both objective, so subjective prerequisites in this matter.
More often drivers prefer to extend the life of the "steel heart" of the machine due to the correct operation of fuel and lubricants.
Someone "on the eye" seems to be the best use of some kind of specific species, and someone using the same product and like doing everything "on science", gets completely reverse result. As a result of similar misunderstanding, the engine suffers.
But such car owners who agree to solve the problem of the durability of the motor by replacing the overwhelming engine to the new, yet not so much. More often drivers prefer to extend the life of the "steel heart" of the machine due to the correct operation of fuel and lubricants.
And therefore it is better to figure out what should be suitable oil For a worn engine.
How to marking oils to find out the appropriate option?
It is very difficult to accurately determine which motor oils will best work in lubrication systems power plants With impressive mileage or with elevated wear indicators. Specific clarity (especially for non-professional) make instructions for the operation of the car, which provide manufacturers and labeling on canisters with engine oil.
Typically, a large font on the package indicates two of the most important parameters in accordance with the International SAE standard - the thickening index and the viscosity index of this oil. What is questionable, will help to understand the next specific example.
Take the SAE 10W-30 viscosity designation. Here in the first place is the number 10. It demonstrates the index of the thickening of the oil. So, the lower this indicator, the more low temperatures may normally operate the specified oil.
The second number in Example (30) is the viscosity coefficient that the product acquires when the engine is achieved at 100 ° C. In this category, the dependence is such - the higher this indicator, the oil is more dense.
Latin letter W (from the English. Wordter - Winter) informs us that this oil You can use in winter.
What oil is suitable for engines with significant mileage, you can find out in the instruction manual for a particular engine.
In particular, if the motor is badly launched in winter, especially in areas with frequent temperatures below -20 ° C, it is recommended to use lubricant with a reduced thickening index (for example, instead of the SAE 10W-30 oil offered, it is better to fill SAE 5W-30. In general, in the regions for which cold winters are characterized, they are advised to use oil with a thickening index 5.
For the classification of motor oils, another international standard is used - standard quality API. The lubricant in the format of this standard is indexed by two letters: the first - S, the second is the letter according to the alphabet. At the same time, the farther letter is in the English alphabet, the better the quality oil it means. In particular, for engines with high mileage, oil with an SF index is recommended.
Back to the category
What is better for the motor - mineral water, semi-synthetic or synthetics?
Currently, all engine oils for manufacturing material are divided into mineral, synthetic and semi-synthetic products. The lubrication from the semi-synthetic category is used, as a rule, in the countries of the former Soviet Union.
Specialists recommend during the operation of the engine strictly follow the instructions for using a specific category of oils. The reason is again in an individual approach to their use in motors. After all, in other cases, the choice of the highest quality synthetic oil may not be able to help power aggregate More reliable and durable, how much to harm the motor itself.
For example, an ill-conceived replacement mineral Oil On the synthetic analogue (who does not want to pour up a better synthetics to their motor a priori!) can lead to problems. After all, in the engine with a large mileage and worn out the glands, such oil, in its project functional, not intended to increase the wear resistance of the unit, will start just punching these glands.
Also very carefully pick up for a relaxed engine semi-synthetic oil. The fact is that the semi-synthetic compared to mineralka is better material, but at the same time it has both more "fluidity". This circumstance may not be very well affected by an enhanced engine. Therefore, what kind of oil it is to apply in the engine depending on the mileage and the degree of its worn, it is better to consult directly from the official representative of the manufacturer's company of this car.
Thus, if the car's odometer shows mileage 100 and more than thousand kilometers (especially if it domestic car), T. the best choice For the engine, most likely there will be mineral lubricant. Among other things, in such a motor it is necessary to add oil more often, and the mineral water provides significant financial savings.
Semi-synthetic oils are a mixture of mineral and synthetic raw materials in certain proportions. For sufficiently old domestic cars, the use of said oils can be risky at least that they are capable of their aggressive chemical components spoil the rubber components of the unit.
Car lubers are very often encountered with the problem of choosing a lubricant for engines with a large mileage. Most often, the vehicle owners cannot figure out what viscosity oil is used for a power unit.
This is due to the fact that the parameters and characteristics of certain models of the engines differ in each other. Therefore, when choosing a lubricant, special attention should be paid to tolerances and regulations from the manufacturer of the TC.
For example, on the car Volkswagen Bora manufacturer recommends using 5W40 viscosity oil. If the owner of the TC will fill in system of DVS Lubrication with an index 10W40 or 15W40, then problems associated with pumping fluid in the oil pump will arise.
This is especially true when severe frosts are observed. If you pour 0W20, the motor will start working for wear, since the oil will have a large fluidity and as a result of the warming of the motor will not be able to ensure proper protection of metal parts and mechanisms.
Big mile engine
As a rule, when the car crosses the line of 200 thousand km of mileage, experts recommend using semi-synthetic in return for synthetics. First of all, it is associated with the loss of operational characteristics of the engine. Therefore, to know, oil with what viscosity to use, must be considered technical condition Engine.
Increasing the mileage of the DVS involves certain changes and requirements for viscosity lubricant indicators. Experienced mechanics recommend pouring oil into the engine with a large index for optimal yield and lubrication of worn out parts. The earlier the car owner will replace the composition on analogue with appropriate viscosity characteristics, the greater the likelihood of storing the functional state of the FEA.
It should also be noted that in worn engines it is not recommended to pour too fluid oils with a large viscosity index, such as 20W50, 10W50. Due to the liquid state, the formed micropoline will be regularly drained from the surface of the driving mechanisms, which can lead to wear and overheating of parts.
Therefore, to select the most optimal viscosity of the oil as for the winter, so the summer period, it is necessary to stay at 5W40, 10W40. In severe frosts, you can use 0W20, and then perform a smooth transition to 5W30.
Recommendations from specialists in the choice of oil viscosity
According to the opinion of auto mechanics and vehicles, it is necessary to use:
- All-season 5W40, if the engine mileage is more than 100 thousand km. In the summer, 10W30 is recommended for the motor;
- All-season 5W50, if the mileage of the engine is more than 250 thousand km. For winter - 5w40 or 10w
But taking into account these recommendations, we note the fact that the power unit may lose the functionality and be in a worn condition for achieving 50 thousand km. Therefore, such indicators should be considered only in the presence of normal engine performance.
Motor liquid pumping
Pumping oil is the possibility of its unobstructed passage through the oil system of the engine. Washing is responsible for cold launch of DVS. It is from these two parameters that the choice of viscous parameters of lubricant depends.
For example, a machine with an index 5w has a minimal pumping at T -35 ° C. The oil turning temperature is -30 ° C. That is, with the indicator, the engine can be launched in the cold.
Consequently, the 5W motor lubricant can be used in moderate climatic zones with a smooth transition to the northern regions, where the temperature indicators in the winter period do not exceed -35 ° C.
| SAE viscosity classes | Low-temperature viscosity | High temperature viscosity | |||
| Pumping | Turning | At 100 ° C / mm² / s | Minimum at 150 ° C | ||
| Maximum at temperatures, MPa | Mining | Maximum | |||
| 0w. | 60000 MPa -40 ° C | 6200 MPa -35 ° C | 3.8 | - | - |
| 5w. | 60000 MPa -35 ° C | 6600 MPa -30 ° C | 3.8 | - | - |
| 10w | 60000 MPa -30 ° C | 7000 MPa -25 ° C | 4.1 | - | - |
| 15w. | 60000 MPa -25 ° C | 7000 MPa -20 ° C | 5.6 | - | - |
| 20w. | 60000 MPa -20 ° C | 9500 MPa -15 ° C | 5.6 | - | - |
| 25w | 60000 MPa -15 ° C | 13000 MPa -10 ° C | 9.3 | - | - |
| 20 | - | - | 5.6 | 9,3 | 2,6 |
| 30 | - | - | 9.3 | 12,5 | 2,9 |
| 40 | |||||
Many car owners are the question of which engine oil is most favorable for engines with high mileage. All parts and components of automotive internal combustion engines need constant quality lubricant. The performance of the engine oil depend on the operational properties and characteristics of the engine.
Effect of lubricant for the operation of the automotive engine
The correct choice of engine oil brand ensures the stability of the engine of the internal combustion of each car, regardless of its model and year of release. From how the machine lubrication system works, the following operational indicators depend:
- Common fuel consumption.
- Mileage car to another overhaul.
- Consumption of lubricant material.
- Time between the total oil change.
- Wearness of parts and assemblies of the power unit.
- Power characteristics of the engine.
- Purity of exhaust gases.
The presented list includes not all parameters depending on quality. motor fluidpoured into a tank of a particular car. The effectiveness of the applied lubricant is determined by the condition of the working surfaces of the engine elements and its stability.
Running the engine on the cold, car acceleration time, developed speed, power and other performance features Directly depend on the right choice of engine oil.
Selection of oil for cars with big mileage
Lubricant manufacturers create substances suitable for different situations. Automakers, for their part, give recommendations what components it is necessary to give preference in specific situations.
For new cars, this question is solved simply. They are under warranty, drivers have the opportunity to contact the car service companies at any time to clarify the appropriate brand of engine oil. In addition, the car's passport contains detailed instructions Oh suitable lubricant For this model.
However, difficulties with right choices There are when you need to purchase engine oil for a large mileage. In this case, the event on the topping and replacement of lubrication is significantly complicated.
Critical to the distance traveled
Many are interested in which the magnitude of the mileage is the utmost for this vehicle. After all, the term "big mileage" does not give a complete idea that the internal combustion engine is time to repair due to changes in its details and nodes (wear, destruction).
To determine what has passed a lot of kilometers, there are no definite indicators in numbers. It is believed that the domestic engine that spent 100 thousand km, has a big mileage. At the same time, the characteristics of some Japanese power units do not change after ten thousand kilometers of the mileage. The middle way without the need for major repairs and risk of breakdowns from wear for imported engines is 150 - 200 thousand km.
If the overseas motor begins to refuse earlier mileage norms, it means it is operated with violations:
- the use of low-quality fuel;
- mark engine oil does not correspond to the recommended;
- violation of the recommended regime between service replacements of lubricant material.
Of great importance is the compliance with the established rules when conducting a procedure for replacing engine oil. These activities are encouraged to trust experienced employees in car service.
Features of the work of the engines after long runs
Details and nodes in internal combustion engines that have passed a long way have significant wear. Elements of the cylindro-piston group are especially susceptible to it. Wear pistons, cylinders, seals and valves leads to the following disorders in the operation of the power unit:
- Reducing the engine compression.
- Increase fuel consumption.
- Deterioration of dynamic indicators.
- Difficulty when starting the engine.
- Increasing the harmful effects of oxidative processes.
- Loss of fox efficiency in lubrication.
Transition to synthetics
Immediately decreases the wear of the working elements of the motor, the consumption of fuel is normalized. With the help of synthetics, metal surfaces for a long period are protected from oxidation and corrosion.
Synthetic lubrication facilitates the "cold start" of the power unit. A low viscosity gives it an additional fluidity, due to which the crankshaft is freely scrolled at low ambient temperatures. When using synthetics, fuel is saved when the engine is turned on. Starting is performed quickly, not allowing the items quickly wear.
Efficiency of special additives
During the operation of the car, the details of the power unit receive constant wear. Distinguish several wear states:
- stage Stream;
- mode established;
- emergency condition.
Details and engines with large mileage sites are located in the last emergency. Their wear is rapidly developing, which can lead to emergency breakdown. To exit such situations, manufacturers of engine oils have developed additional substances - additives into lubricant liquid.
Due to the presence of an anti-wear booster, the thickness of the protective film increases. The oil layer protects the details from the destroying friction forces arising in the process of mutual contact of moving surfaces inside the motor. This technology is the most effective wear protection.
Additives that prevent the formation of various precipitation and deposits do not allow paralyzing the operation of the internal combustion engine. They actively wash off the precipitation formed earlier. As a result of these additives, the engine power increases, oil and fuel costs are reduced.
In any case, worn out motors cannot be made new and young. Experienced specialists advise the use of lubricants with high viscosity. For example, if in the passport on the engine there are recommendations on the use motor lubricant 5W 40, it is necessary to pour the 5W 50 brand oil instead.
This solution is a temporary compromise. It will help to align the work of the power unit, but will not improve its physical condition.
Engine operation with large mileage on semi-synthetic lubricants
When using semi-synthetic in motors with a large mileage, an incommable thin protective film is formed. This effect occurs due to the unique magnetic properties of complex elements included in these lubricants.
Conclusion
Choosing fit lubricant For your car, you must be guided by the recommendations of automakers. The instructions contain detailed information on admissible viscosity and other engine oil characteristics.
