What the numbers 5W30 mean. Fluids: Motor oil, all you need to know. How to choose engine oil

The main purpose of the motor lubricants It is the protection of elements of engines from dry friction and ensuring the normal operation of the power unit while maintaining the tightness of the cylinders. For proper selection Oils engine operates regularly for a long time. 5w30 oil most popular among synthetic species Lubricants of famous brands.

Description of domestic lubrication products

The largest domestic manufacturers lubricating fluids Rosneft, LUKOIL guarantee high quality of the produced oil products. Synthetic motor oil5 W. 30 produced here enters the acceptable price category this grease Perfectly adapted for the work of many types of force aggregates in domestic climatic conditions.

5W30 motor oils manufactured in Russia are successfully used as high temperatures Environment, which is acceptable to use them in warm latitudes.

Which means symbolism placed on the label of the engine oil

When purchasing lubricants, buyers are wondering what 5w30 decryption is that the information is contained in the inscription, what kind of product is preferred. Decoding of motor oil is necessary for implementation right choice lubricant products.

SAE 5W30 is decoded as follows:

1. From among Numbers, it is necessary to subtract 30, the result is minus 25. The temperature equal to 25˚C is permissible to start the cold engine.
2. The letter W corresponds to the first letter of the Winter's word and means the possibility of applying this brand in northern latitudes.
3. According to W, it is determined by the oil speed at high temperatures in the running motor.
4. The value of the number located after W characterizes the viscosity of the oil during the heated engine.

Due to the fact that the domestic climatic conditions of operation of the car differ sharply, select lubricants needed after a thorough study of the inscriptions on the product. The label placed on the label corresponds to a special classification of oils for SAE viscosity.

This classification helps to choose the desired grease brand for its vehicle by its technical characteristics depending on the temperature mode in which the engine oil 5W30 will be used.

Benefits Use SAE 5W 30 Lubrication

5W30 Oil Synthetic has indisputable advantages. Excellent characteristics of this material contribute stable work Motors during operation in adverse urban environments that have a negative impact on motor elements:

• long work at idle;
• finding a car in road congestion conditions (traffic jams);
• operation of the machine at short distances;
• increased dust content in the atmosphere.

The correct selection of the oil product contributes to an increase in the duration of the motors. Due to the unique formula and the presence of special additives, which have an oil engine 5W30, these lubricants have properties providing the following functions:

• protection of elements of the power unit from premature destruction;
• reduction of harmful effects of corrosion;
• removal of nagar layers from working surfaces;
• cooling parts and knots of the working engine.

Motor oil 5W30 withstands the temperature inside the working power unit equal to 150 ˚C, without changing its valuable qualities. Choosing an oil for the engine of a particular car, you need to be based on the recommendations that are contained in specificationscompiled by automakers.

Machine tolerances are installed not for this model of the machine, but for the direct engine.Despite the brand fame, it is necessary to choose a lubricant with parameters corresponding to the requirements put forward by the manufacturer of this car.

Features of the chemical composition of oil products

Additives included in the SAE 30 motor oils are designed to perform strictly defined functions. Thanks to a balanced set of supplement inclusions oil fluids become suitable for use in specific engines. Each type of lubricant has additives in accordance with standard standards for motor oils.

What kind automotive oils Apply depends on the choice of the car owner. Based on the age of cars, the characteristics of the engine, high-speed modesThe owner prefers a certain type of oil:

1. Mineral oil.
2. Synthetic or semi-synthetic.

It is the opinion that the use of mineral lubricants in machines produced over five years ago leads to a reduction in oil consumption and increases the use of the engine.

If an imported modern under the hood is installed force aggregateIt is recommended to use synthetic varieties of lubricants. In this series there is a SAE 5W3 synthetic oil oil belonging to well-known world brands capable of withstanding climatic differences and the intensity of traffic loads in the city.

Test oil liquids

Before receiving the quality certificate, the test passes and chemical analysis is performed. On the labels, the canister provides information on the compliance of the characteristics of lubricant material requirements of standards. Test data are given to inform consumers.

Testing oils occurs in laboratory conditions on special stands. A test for testing viscosity of the lubricant product is carried out depending on the temperature inside the working motor.

This type of diagnostics allows you to determine the ability to start a cold engine in the frost and the degree of engine protectedness from overheating in hot weather. The conducted test shows the thickness of the protective film generated on the driving surfaces of the working parts and its changes as a result of increasing the internal temperature of the engine.

The test allows you to familiarize consumers with the features of lubricating materials manufactured by various manufacturers.

Varieties of lubricants depending on the type of engine

Motor oils of three categories are presented on the market:

• lubrication for gasoline power units;
• diesel oil;
• universal lubricant.

The main property of the lubricant of any kind is the viscosity characterizing the ability to maintain fluidity and remain on rubbing surfaces with increasing the temperature of the parts and nodes of the engine.

In the manufacture lubricants 5W 30 For diesel, additives obtained using the newest nanotechnology are added. Their use helps to increase protective functions and reduce the number of harmful exhaust gases. In these synthetic additives, sulfur, chlorine and phosphate inclusions are contained in minimal quantities.

Diesel oils possess the characteristics recommended for use in diesel power units:

1. High speed of achievement and coating parts due to the optimal fluidity of the lubricant material.
2. Saving a normal operating pressure in the engine at any loads.
3. The presence of a guaranteed protective film on the details at high and low temperature values.
4. Reducing diesel fuel consumption.
5. Reducing carbon dioxide in the exhaust.

In the turbocharged engine, it is not recommended to pour the synthetics 5W 30, for this type of engine, semi-synthetic oil, which has a low viscosity. The semi-synthetic contributes to the improvement of environmental parameters of power units.

Malicious energy-saving lubricants are recommended to be used in car engines operated in the EU countries and Japan, where the environmental situation is exposed to enhanced control.

In order to avoid acquiring a fake lubricant, only 30 specialized outlets should be visited. When buying a lubricant of a well-known global brand, you need to carefully examine the quality of packaging of goods, covers and labels.

Canister should not have scratches and scuffs. A protective ring under the lid should be without shifts and damage. The label must be framed by a special branded logo.

Inexperienced drivers and vehicle owners are often interested in the question: how exactly labels are decrypted different species Oil.

As a rule, all oils for car motors They have labeling, which consists of two numbers and the letter W between them, it has approximately the following type: xxwyy, where XX and YY are the specified numbers.

In this case, we will analyze the oil of the SAE 5W30 class. Looking in advance, it is worth noting that SAE is the name of this classification that inherited its name from its developers.

According to the world accepted sAE classificationThe method described above is labeled car oils that are designed for all-season use.

By and large, the first number indicates the viscosity of the oil at low temperature modes of operation, and the second is viscosity in working condition at high external ambient temperatures.

Recognized main in most countries of the world and adopted for the international, this classification system was developed in the United States of America. The development of this classification was the Society of Automotive Engineers, SOCITY OF AUTOMOTIVE ENGINEERS, shrined by SAE. It is the SAE 5W30 (on the example) - the most traditional designation of the oil class, although there are others.

In addition to the SAE classification, another number of classifications are made that are repelled from the type of fuel for motors, and the year of car development. But this is other classification directions. In this case, the 5W30 labeling oil decryption can only be performed according to the SAE standard.

The letter W is just the word Winter (winter), which just testifies to the belonging motor lubricant The viscosity class, which is provided for use in low-temperature conditions.

On the example of SAE 5W30 oil, it is necessary to understand that the number 5 corresponds to some parameters that this oil. Of course, the number 5 is not some single viscosity or temperature parameter, this parameter is a collection (composite), since several criteria are immediately necessary for the classification of machine oil.

What are both parameters indicate?

Firstly, this parameter Oil classification indicates the speed of pumping lubricant from the moment after the start. He also shows how fast the oil goes into engine working units. In this case, this parameter also indicates the number of energy required rechargeable batterywhich is used on the starter drive to the operating condition (in this case, to the temperature of 40 degrees Celsius).

The second number that is usually indicated after W (sometimes parameters are separated by a dash, which is correct, and sometimes no), corresponds to the summer or as it is also called the high-temperature mode of operation of the engine. This oil viscosity class shows its main characteristics at the engine temperature in working condition - in the heating range of about 100 degrees Celsius.

Unfortunately, it is not possible to simply measure these parameters, since these values \u200b\u200bare only classes that can also correspond to a whole set of oil characteristics.

In order to specify the data of the number, the oil is measured in the complex, including determining, for example, dynamic viscosity and kinematic, as well as other indicators. It is also worth understanding that the class corresponds to not one value of operating temperatures, but some of their range. Therefore, even oils with the same viscosity class may differ in some of its own characteristics and for different engines, Or, with differences in temperature, can show different results.

Decoding SAE 5W30.

The adopted classification assumes that SAE 5W30 has a number of characteristics. It is necessary to disassemble them separately, and first of all the designation 5W (from the range from 0W to 20w) foresides the correspondence of a certain range of temperatures (total temperatures from -35 to -10 degrees Celsius).

• 5W is one of the low-temperature viscosity classes, which allows the use of the engine with quite strong frosts. Temperature for this class of oil at -30, -25 degrees Celsius is quite comfortable for work.
• High temperature viscosity (in this case, 30) denotes the suitability of oil use at temperatures of 2025 degrees Celsius.

Thus, the 5W30 oil is well suited for the conditions of the northern countries with quite low temperatures, but without a strong heat in the summer.

A large number of products and a variety of fuel markets in the Last time is the main reason that the selection of motor oil involves certain difficulties. Car lubers constantly focus on not only on quality, but also on seasonality, mixing, compatibility and interchangeability of oils of various brands.

It is also well known that the lubricant viscosity indicator is one of the key parameters on a par with the base base used in the manufacture of lubricant material (). In other words, the quality and price of the product will depend on the basics and package of additive.

As for viscosity, this parameter defines both the overall possibility of using lubricant in a particular engine, taking into account the recommendations of the manufacturer of the power unit, and the feasibility of the operation of the DVS on the product with a particular viscosity.

In this article, we intend to talk about popular oils of 5W30 and 5W40, what is the difference between these products, what are the characteristics of oils 5W30 and 5W40, is it possible to fill the oil 5w40 instead of 5w30, and which oil is better, 5W30 or 5W40 in winter and summer.

Read in this article

Viscosity and seasonality of engine oil

Let's start with the fact that many drivers heard some and some came across the situation when the engine could not start the engine due to the fact that the lubricant thickened in the crankcase. This means that when a charged and fully good starter, still fails to turn the crankshaft with the desired frequency that is necessary for running.

It turns out that in this case the material has too high viscosity and is not suitable for operation in winter conditions. In other words, the so-called seasonality of the fuel for the motor was not taken into account. This is not surprising, as today there is no clear division on summer and winter products.

The entire modern classification of oils is reduced to the fact that the driver can choose a product from all-season motor oil directories. Such lubricants have a different viscosity, tolerances, basic base and additive packages. Moreover, in recent times, the use of the use that can be equally poured both into gasoline and diesel engines is practiced.

So, back to the conditional classification on the season:

1. Without going into details, the so-called summer lubricant has a high indicator (index) of viscosity, which allows the material to work normally in the engine when the outer temperature does not decrease below the zero. In this case, a more viscous product forms a "thick" protective film on the details, reliably protecting the surface of wear.
2. Winter lubricant has a low viscosity, such a lubricant allows you to start the engine into severe frosts without much difficulty. However, a more "liquid" low-viscosity substance after heating the engine is formed by a thin protective film, yielding the quality of the engine protection with summer analogs.
3. All-season oil for the engine, unlike winter and summer, does not imply seasonal replacement, that is, it does not need to be changed within the season and can be operated year-round. Taking into account the fact that almost all modern products are all-season, such products are optimal balance, combining the necessary properties for summer and are suitable for winter operation

In order to separate lubricants, taking into account the dependence of the viscosity of the viscosity on temperature, there is a special classification of SAE (specification that was developed by the Society of Automobile Engineers Institute). The SAE classifier determines that summer products have an indicator from 20 to 60. Winter lubricants received a mark from 0W or 5W to 25W.

The combination of these two indicators is separately indicated on all-season oil And well acquainted motorists (for example, oil 0W20, 5W30, 10W40, etc.). Now let's figure out what the viscosity of the popular oil 5W30 and 5W40, and what exactly will indicate the decryption of oil 5W30 and 5W40. We add that the topic of choice of oil 5W30 or 5W40 for assumes the same answers to the questions delivered in this article.

What is the difference between the engine oil 5W30 from 5W40

In order to accurately determine the viscosity of the all-season lubricant in the winter and summer period, it is necessary to look at the numbers before and after the W literature in the designation. This letter is a reduction from Winter (English). For example, 5W30 indicates that 5W indicates the degree of viscosity according to SAE at negative temperatures.

The number 30 is a temperature indicator for SAE in relation to the properties of the product at high temperatures. From these two specifications will depend on both the ease of launch, fluidity and pumpability of the immense lubricant in winter and the stability of the protective film on the surface of the loaded parts at maximum temperatures.

If you ask the question than the 5W40 oil differs from 5W30, then it should be noted that these oils have identical indicators that characterize the suitability for operation in winter. The classification of 5W clearly indicates that such oil provides a sure-to-30 degree frost.

Now let's take a look at the high-temperature viscosity on SAE, that is, unlike 5W30 from 5W40. Common comparative analysis The data indicates that the kinematic viscosity of 5W30 when heated to 100 degrees Celsius is from 9.3 to 12.5 mm square / s. At the same time, 5W40 in similar conditions has a viscosity indicator from 12.5 to 16.3 mm square / s.

From this comparison, it is also seen that the minimum viscosity rate of HTHS in the case of 5W30 is located at 2.9. At the same time, for 5W40, this value is also 2.9, while the parameter is capable of reaching 3.7, which is noticeably higher.

The above data allow you to determine which oil is fat, 5w30 or 5w40. Simple wordsIn terms of high heating, 5W40 is noticeably different from its 5W30 on high-temperature viscosity. If otherwise, the answer to the frequent question, what kind of oil is thick, 5w40 or 5w30, it will be exactly the first option, that is, 5W40.

Which oil is better: 5w30 or 5w40 in summer

Taking into account the fact that the oil 5W40 is more viscous, it creates a solid and stable oil film on the surface of the parts relatively with a competitor. As it may seem at first glance, such a product is no different during winter operation and better protect the engine in the summer.

Note that such an assertion is fairly partially. First of all, you need to take into account constructive features This or that DVS, as well as the individual recommendations of the manufacturers of the motor. The fact is that even a slight increase in the viscosity of the oil in some units can lead to the fact that the pumpability will become worse, that is, the lubricant will not flow to friction pairs in due quantity.

Also, when choosing a summer viscosity indicator, it should be considered that too "liquid" lubrication (for example, 5W30) can lead to leaks of lubricant through the glands, gaskets and other seals. The oil film on the details when using low-viscosity oils can be fine, as a result of which the wear of nodes is significantly increasing, the inheritance is growing.

In other words, before you choose your choice on 5W40 or 5W30, you must:

1. Separately make sure that both types of oil are in the list of recommended by the manufacturer for a particular motor.
2. It is also not superfluous to take into account the features of the engine operation.

For example, the viscosity factor 30 means that the declared characteristic of the engine oil will be maintained at operating temperatures up to 150 degrees.

If the car is located in the region, where the outdoor temperature is significantly increased in the summer, while the driver constantly "twists" the engine to high revolutions, practices the aggressive ride style and strongly loads the power unit, then the oil temperature will be as high as much as possible. In this case, it is worth thinking about the increase in the "summer" viscosity index.

Compatibility of oils 5W30 and 5W40

Frequently, especially in the event of an emergency malfunction, there is a need to add oil into the engine. In such a situation, not always at hand is the grease of the manufacturer, whose product will initially flood in the power unit.

The same is true and relative to the viscosity index. For this reason, it is important to know whether it is possible to mix the oil 5W30 and 5W40. At the very beginning, we note that it is often not recommended to mix mineral oils with products in which the base base is completely synthetic. In other words, mineral water with synthetics is not mixed. Also not recommended mixing of semi-synthetic with synthetics, etc.

As for 5W30 and 5W40, it is possible to theoretically mix these oils with minimal risks if both products of one manufacturer. IN emergency situation Mixing oils is allowed different manufacturersBut only when taking into account that they have the same basic basis.

This means that mineral oil is mixed only with mineral, semi-synthetic with a similar product, etc. At the same time, it is still impossible to give an unequivocal answer to the question if it is possible to fill 5W40 into the oil 5W30. The fact is that for each type of oil, manufacturers use special additive packages that can join the reaction after mixing.

In any case, even if after the topping there are no obvious consequences, it is still an emergency measure. After eliminating the breakage, you need to immediately merge such a mixed lubricant from the engine ,. Also in some cases may be needed.

Let's summarize

Given the foregoing, it becomes clear that the viscosity of the oil and the stability of this characteristic at different temperatures determines the main characteristics of the lubricant, as well as the price of the product.

The best choice can be considered such an oil in which viscosity indicators are in the tolerances of the manufacturer of the engine. In parallel, attention should be paid to the basic basis, since more expensive semi-synthetic oil, such as 5W40, will be better at the service life and quality is relatively with the same, but mineral 5W40.

For the owners of old cars to choose oil, it is necessary to approach with special responsibility. On the one hand, there is an intensive development of technologies in the production of fuel. This means that information regarding lubricants in the instruction manual may be strongly obsolete.

At the same time, if the lubricant has to be chosen independently, you need to consider a number of features that we told above. If it is easier, not always expensive small synthetics will mean that the old motor on such modern high-tech oil is securely protected in summer and winter.

Finally, add that when choosing an oil you need to stick to a certain middle, as well as take into account the individual features of the operation of the OI. This means that lubricant should not be strongly diluted and lose its properties, taking into account the maximum possible heating, and remain fluent with the onset of cold weather.

Read also

Features of the selection of motor oil for winter. What oil among all-season is considered winter on the marking that you need to consider when choosing.

The main criterion for choosing the engine oil is the recommendations of the engine manufacturer. For labels of the type 5W30, the decryption of parameter values \u200b\u200bwill help determine the most appropriate option for engine oil for specific operating conditions. Choose from a number of designations allowed by the manufacturer for each engine.

Viscosity indices

Mark the characteristics of lubricants with a combination of letters and numbers by type 5W50, 10W 40 offered specialists from Society of Automotive Engineers (Community of automotive engineers), or abbreviated SAE. The separator between the digital indexes in the form of the Latin Litera "W" refers to the first of them and comes from the English word Winter (winter). Figures are viscosity indices. These values \u200b\u200bare defined according to the SAE J300 APR97 standard.

The first index indicates the launchers of oil under conditions of boundary decreases of temperature. It can take values \u200b\u200bfrom 0 to 25 in increments of 5 units. Oils 20w and 25w for domestic conditions are not relevant. Each low-temperature viscosity index corresponds to the regulatory values \u200b\u200bof temperatures for which oil can be pouring on the system and scrolling starter crankshaft Engine.

The second indicator depends on the viscosity of the oil at operating temperature Engine.

It can take values \u200b\u200bfrom 20 to 60 with an interval of 10 units. Each of them corresponds to a viscosity range at 100 ° C. For these values, the value of viscosity at 150 ° C and the shift rate is 10 6 s -1.

The dependence of the properties of the oil from the temperature modes by the SAE classification is represented as a table:

From the standard it can be seen that 5W30 oils must provide a steady start of a good engine with a fully charged battery with a decrease in temperature to -30 ° C after a long parking. For the second parameter 30, the decryption gives that on a heated engine in a zone, where the oil temperature is about 100 ° C, its viscosity should be in the range of 9.3.12.6 mm² / s. Similarly, you can define the parameters that should correspond to the oil 5W50, 10W 40 and others.

Criterias of choice

With the 1st parameter, everything is simple. What it is lower, the better. The restrictive factor becomes the cost. Oil 0W, with other things, it turns out to be more expensive than 5W and more than 10W. For regions with a moderate climate, overpays for the stock for starting properties does not look justified.

0w and 5w values \u200b\u200bare characteristic of the highest quality. synthetic oils. With 5W and 10W indexes are produced by the best price and quality combination semi-synthetic oils. Budget mineral oils are produced with low-temperature viscosity of 10W and 15W.

With the second parameter more difficult. There is no general optimal high-temperature viscosity value for any engine. Designers link the size of the gaps, types of surface treatment, the cross-section of oil channels, pump performance, temperature modes of operation with the velocity of oil necessary for this combination.

Until recently, the most popular view of oil in our country was semi-synthetic, with a viscosity of 10W 40. It was perfect for domestic front-wheel drive cars and budget cars with obsolete engines. Large enough gaps, lack of turbines and changing systems of gas distribution phases this allowed.

Motorists who prefer to ride aggressively, sought to pour "sports", as it was presented with marketers, grade 5W50 or 10W60. For ordinary engines This led to a change in the thickness of the lubricant film, an increase in hydraulic losses, a reduction in efficiency and an increase in operating temperatures with a resource adjustment.

IN last years Automakers began to pay primary attention to fuel economy. As a result, priorities began to shift toward more liquid on the working modes of oil 5W30 or 0W30. Reducing gaps and fluidity increased positively at the return of engines and fuel consumption.

For the most modern Japanese and Korean motors, manufacturers as the main steel to point oils with a viscosity of 5W20 and 0W20. Such products provide excellent performance indicators, but due to work with the minimum thickness of the oil film require the highest quality parameters. Economical liquid oils are relatively road. The development of a resource is faster, because the replacement should be made more often. European constructors are preferred by 30.

Transmission standard

For transmission lubricants, there is its own SAE specification. Analogies with products for engines in this case are inappropriate. Decoding of motor oil 10W 40, 5W30 or any other to determine the starting properties is performed very simply. It is enough to take away from the low-temperature index number 30. It will be an exemplary temperature in ° C, which is possible a stable engine start.

Marking 75W90 in transmission does not mean that it loses fluidity already at a positive temperature. Temperature flow parameters of such products are described by the SAE J306 standard. The values \u200b\u200bof low-temperature and high-temperature indexes for transmission products are chosen so that they do not intersect with rows of values \u200b\u200bfor motor varieties. 70W, 75W, 80W, 85W values \u200b\u200bare used for the "winter" row and 80, 85, 90, 140, 250 for "summer".

As the value of the maximum allowable viscosity at low temperatures, the value of 150000 CP is adopted. With a larger flow rate, the likelihood of the destruction of bearings and other elements of gearboxes and leading bridges appears. The upper yield strength should provide a sufficient thickness of the oil film at 100 ° C, based on possible point loads in a particular node.

So, for the product with marking 75W90, the permissible temperature of operation is -40 ° C, and the viscosity when heating to 100 ° C should be in the range of 13.5.24 mm² / s. Marking 75W90 is typical for synthetic products fill in the checkpoint of modern cars.

Engine internal combustion It can not work without lubricating driving parts. This is a simple truth - the main reason for which every motorist conducts whole hours for finding a suitable for its car. Often this choice is resting not so much in the manufacturer of the liquid, as in the viscosity, which is the most important property. In this category, there are several types of lubricants, but most of them prefer SAE 5W30 lubricants, the decoding of which will be discussed below.

What does this code mean?

The classification of motor lubricants for viscosity is carried out by the Community of Automotive Engineers (SAE). It is based on the indicators of permissible degrees of heating and cooling the liquid. If you consider the code "5W30" in a detailed decoding, then you can understand how the temperature limits of this category are formed. The letter "W" indicates that the oil can be used in winter. The first digit shows the minimum engine temperature. It is possible to obtain the latter by subtracting from the specified value of the number 30 or 35 (there are no clear criteria for such an estimate). Consequently, the liquid with the value of 5W will freeze with frosts from -30 ° C to -25 ° C.

But in the code "5W30" there is a third part - the number 30. It sets the upper threshold of the permissible temperature, which will allow the lubricant to work without interruptions. It is determined by subtracting from the above 5 parameter 5 (some manufacturers can notice deviation to 0). It turns out that the option in question does not lose its viscosity to a temperature of + 25 ° C.

Thus, the 5W30 engine oil is the all-season lubricating fluid for vehiclewhich is designed to work in temperature range from -30 ° C to + 25 ° C.

The engine will work with maximum performance and winter, and in summer, however, in operation in areas of excessive frost or heat, it is worth contacting specialized seasonal mixtures.

Characteristics

Decoding of 5W30 engine oil gave a general idea of \u200b\u200bthis consumable material. It is now important to highlight the main characteristics of the liquid. The autosal of this class is synthetic or semi-synthetic lubricants, which contribute to uninterrupted operation of the engine, protect its running parts from premature wear and reduce their heating. Immediately it is worth notify that the latter of the listed functions is not the main, since the cooling system is responsible for it. Nevertheless, the oil temperature is much lower than that of the engine operating engine (especially in the friction elements). Due to this, a certain heat exchange occurs.

Returning directly to protective functions, it is impossible not to noted that movable parts are the most vulnerable to malfunctions. Gradually, they are disappeared, due to which wear is increasing. Motor protects these engine components at any time of the year. This happens as a result of enveloped by their oil film, which performs one of the most important functions in dVS work. The thin layer liquid covers the parts, due to which their movements are smoothed, and wear is reduced.

An important feature of 5W30 oils is effective cleaning. The liquid, constantly circulating in the power unit, not only maintains the state of the oil film, but also takes the resulting residues of the combustion products, that is, the Nagar.

Of course, the effectiveness of such purification is greater extent depends on the presence or absence of active detergent additives, as well as on the type of lubrication itself.

How to choose a good oil?

The main parameter to which drivers acquired a new engine oil immediately pay attention to the engine. If the lubricant is a high-quality, then noise the power unit should not be louder permissible to the specifications of the auto norm. No extraneous scraps, screenshots and others unusual sounds should not be. The oil should work softly and silently, otherwise it is worth replacing it.

Equally important, whether the engine is launched in extreme weather conditions: in the heat or frost. Most often car enthusiasts face the last factor. As mentioned above, the 5W30 lubricant engine should be launched without problems at a temperature not lower than -25-30 ° C.

If in the region in which operation is planned, the winter is extremely cold, it is better to purchase more resistant options with a number 0 in front of the letter "W".

In the conditions of heat, the lubricant can also lose its properties, due to which the engine launch will be either very difficult, or it is impossible at all. In such cases, it is better to take mixtures with the end of "40" in marking.

A distinctive feature of oil 5W30 is that they are spent quite economical. The thermal properties of lubricants of this category make them quite persistent. Due to this, the "consumator" does not go away, although if not the most quality optionThis becomes inevitable.

There are many manufacturers in the market of motor oils. By virtue of high competition, the company is trying to offer the best quality at an affordable price, although it is quite difficult to find this precious balance. From the most popular and reliable, you can highlight Motul Specific Dexos,