Synthetic oils viscosity 5W 30. How to properly decipher the labeling of motor oils

15.11.2020

Synthetic motor oil 5W30 from leading global brands is most popular from all represented combustible lubricants.

The main and the main task of lubricants is to protect the engine parts from work dry and ensure its normal operation in conditions of complete tightness of working cylinders. The correctly selected engine oil, represents the key to the maintenance of the engine and increases the service life of its components.

The fuel and lubricant market is represented by three product categories:

for cars with gasoline engines;
for diesel units;
universal, which have physical characteristics that allow them to be used in internal combustion engines and diesel engines.

For seasonality, lubricating fluids distinguish:

winter - 5W, 10W
summer
all-season - 0W 30, 5w30

Regardless of the category of lubricant, engine oil has the main parameter of physical properties that determine its effectiveness. This is a viscosity (5W30), that is, the ability of the lubricant to maintain fluidity, while remaining on the surface of the parts. From this indicator depends on the protection of parts from friction and wear during the operation of the car. If viscosity (5W) does not correspond to the recommended, the engine resource is reduced. Also, the second indicator (30) is also highly temperature viscosity. His deviations from the recommended can lead the engine to overhaul faster than it was initially laid. Since in this case the motor operates on increased revs, which can derive it from the range of maximum permissible norms.

In the choice of lubricating fluid, the viscosity rate must be taken into account. It should not exceed the parameters recommended by the manufacturer. Otherwise, you will increase the load on the engine work, which can lead to serious breakdowns and subsequent expensive repairs.

How to make the right choice?

What should pay attention to when choosing universal fuel and lubricants for your car?

Viscosity indicator.

It is from him that the possibility of starting the engine in winter conditions depends. The lower this indicator, the easier the motor is subject to the ignition signal.
The degree of coating of engine parts by lubricating fluid depends on the viscosity in order to prevent their friction and wear, as well as the prevention of chemical and mechanical damage.

Temperature mode.

It defines the minimum threshold for the efficiency of this type of lubricant in the cold season.
Also sets the temperature range in which the use of oil fluid guarantees the safe operation of the car when the engine is heated.

This classification of fuel and lubricants in viscosity and temperature modes is established by the American SAE engineer community. The correspondence of the motor oils of this classification is indicated on each package "SAE".

5W 30 series

Motor oil Synthetic series 5W30 uses the greatest popularity of all shown fiber-lubricants. Product characteristics of this group satisfy the strict requirements of the operation of cars in the conditions of the city and on the road highways. Urban mode is different:

long-term idling engine
idle car in traffic jams
stable trips for short distances,
increased dust content in airspace.

These factors significantly reduce the service life of the engines. Properly selected oil product is the key to the long functioning and technically-good engine status.

Automotive lubricants of the SAE 5W30 class differ in a unique formula based on the synthesis of oil base and a package of additives that are characterized by synthetics providing:

engine protection from friction and wear of parts,
resistance to oxidizing processes during operation in conditions of high humidity and climatic precipitation.

Package additives can be different. All of them perform only their specific functions. It is a balanced set of additives and makes the oil base suitable for use in a particular type of engine. In each specific type of lubricating fluid, the compliance of the additives should be laid in the framework of the standards for the quality of motor oils.

It should be noted that changes in the heating temperature of the motor can change the properties of lubricating components. Depending on the intensity of its operation, the SAE 5W30 motor oils are able to heat up to 150 ° C. When choosing a motor oil, it is necessary to rely on the technical characteristics recommended by the car manufacturer. The tolerance of oils is not given on a specific car brand, but directly by the type of engine. Therefore, the oil liquids brand can be any, but the basic parameters of the lubricant must comply with the requirements that your car manufacturer highlights.

Purchase synthetic or mineral engine oil with an indicator of SAE 5W30 - the case is purely personal. It depends on the age of the machine, the characteristics of the engine and the features of the operating conditions. Some are inclined to the fact that cars over 5-7 years old are better perceived by mineral lubricating fluids, as this reduces oil fluid consumption, and increase the service life of the motor. In this case, it is better to stop your choice on high viscosity.

For cars with engines of new generation and foreign production, synthetic motor fluids are recommended. From this series, synthetic SAE 5W30 engine oils use the greatest demand, as they satisfy the climatic conditions and the intensity of motion in the urban format.

Replacing lubricating fluid

The frequency of replacement of lubricating fluid in the car depends on the operating conditions, the mileage, the status of the engine parts. The most optimal option is 10 thousand km. In difficult conditions of use, this period can be reduced to 7 - 8 thousand km. Run. With a double fuel format, for example, "gasoline gas", the replacement time increases to 15 - 20 thousand km. This is due to the fact that gas fuel is an more eco-friendly product and softer acts on the parts of the unit. Control the quality of engine oil in the engine and its quantity is necessary every two weeks. To do this, cars have a special probe indicating the minimum and maximum oil level.

Classification and standards

SAE 5W30 Motor Oils Synthetic Complies with environmental requirements. All representatives of this group have not only the compliance of SAE, ACEA and API, but also certified for use in vehicles with valve gasoline and diesel engines from such large manufacturers as: BMW, Volvo, Renault, MAN. To get the tolerance of manufacturers, all oil products are tight control and numerous tests. All stated characteristics must comply with manufacturers.

SAE is a classification of viscosity lubrication products (5W);

ACEA - European classification for a set of additives and the quality of the final product.

API - American classification of fuel and lubrication products by type of engines. Separate oil assignment for use in gasoline (SJ) and diesel (CF) engines. The absence of this information indicates an outdated class of quality.

Advantages of selection of synthetic 5W30

Thanks to the technical composition, 5W30 synthetics has the following advantages:

reinforced protection of the internal parts of the motor from mechanical and chemical exposure;
provide heavy-duty film coating engine parts from the inside;
protective properties from oxidation and corrosion;
protective functions with respect to the driving parts of the motor from mechanical friction and wear during operation;
larger time range between engine oil replacement procedures;
the universal lubricating composition of 5W30 allows the use of liquids of this class in different types of power units.

SAE 5W 30 synthetics is a demi-season lubricant, which allows it to be used year-round. There is no need to change oil in accordance with seasonal changes. At the same time, it does not lose its properties and remains effective for any engines.

Synthetic 5W 30 CF Series for diesel engines

Synthetic oil Malozol Motor 5W 30 is designed for diesel vehicles and is equipped with a double exhaust system cleaning system. This category complies with state standards of environmentalized lubricants. Recommended for cars having seasy filters, turbocharging and catalysts. Comply with the latest requirements of the API SN / CF, ACEA C3.

In the production of oil diesel oils 5W 30, modern basic components developed on new nanotechnology are used. They increase protective functions and reduce the amount of emissions of spent substances. Synthetic additives have a reduced content of sulfur, phosphoric and chlorine ties.

Motor oils 5W30 have characteristics recommended for fill in diesel engines with particulate filters and turbines:

support a working unit clean;
provide fast admission to parts of the motor;
retain normal operating pressure in the engine with any degree of load;
guarantee durable lubrication at low and elevated temperatures;
reduce fuel consumption;
reduce the number of exhaust gases.

Motor oils diesel SAE 5W 30 guarantee high vehicle operational data and increase the service life of gas neutralizers. Automakers allow the use of SAE 5W 30 synthetics with the specified properties, which preserves preferential conditions for passing the car maintenance during the warranty period.

Modern lubricants have a property to reduce fuel consumption. Being a universal lubricant, engine oils are used both in new generation cars and in old models of world automakers. One of the significant indicators in choosing a lubricant is to comply with it to all necessary standards and standards.

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:

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.
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.
All-season engine oil, unlike winter and summer, does not imply a seasonal replacement, that is, it does not need to be changed on season and can be operated year-round. Taking into account the fact that almost all modern products are all-season, such products are the best balance, combining the necessary properties for the summer and are approached 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 familiar to motorists (for example, 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 during the winter period. 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. The total comparative analysis of the data indicates that the kinematic viscosity of 5W30 when heated to 100 degrees Celsius is from 9.3 to 12.5 mm sq. / 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. Similar words, in high heating conditions, 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 the design features of this or that DVS, as well as separate 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:

Separately make sure that both types of oil are in the list of recommended by the manufacturer for a particular motor.
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 an emergency, mixing oils of different manufacturers is allowed, but only when taking into account that they have the same basic base.

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.

What indicates the labeling of engine oil 5W30 and 5W40

So, the first digit from the oil marking indicates its viscosity under conditions of low temperatures, the second part means the fluidity of the substance in the warm season. This engine oil marking characterizes it according to a common SAE classification.

The marking numbers indicate the type of oil - both types of all-season, this is due to its so high popularity among motorists. This class of lubricants is universal (all-season) it can be used in engines with any kind of fuel at any temperatures.

Oil decoding 5W30 and 5W40

Viscosity under low temperatures. The viscosity parameter is very important for the machine, since it determines the ability of lubrication to remain on the surface of the motor for a long time. The most important property of motor oil is described by part 5 of the 5W index, and W is Winter (Winter). In the cold time, the engine oil thickens. The stronger its viscosity, the oil pump works with greater effort. In these oil type, the marking has the same first index.

High temperature viscosity. This parameter characterizes the second part of the marking. According to the installed SAE classification for the 5W30 grade at T 100 ° C, the viscosity of the substance will be from 9.3 to 12.6 mm kV / s. For a 5W40 type brand from 12.6 to 16.3 mm kV / s. Also, the high-temperature viscosity of the lubricant is characterized by another important indicator: a minimum viscosity at the shift rate (106 C-1). In 5W30 oil, this figure is lower (2.9) than for 5W40 oil, in which this figure is equal to (3.50).

The 5W40 engine oil decryption is quite simple:

1) 5W indicates a low-temperature viscosity of the substance and allows for the launch of the car at T -35 ° C.

2) Take 40 from the figure in front of W. As a result, the resulting number (-35 ° C) will be minimal oil temperature, which will allow the DVS pump to pump it through the system, maximizing the lubricant of parts.

Such mathematical manipulations can be easily determined by the smallest temperature of the "engine" engine. Oil decoding 5W30 indicates that this parameter is -30 ° C. It is not difficult to determine: from the value of the launch temperature of the motor (5 ° C), we take 35 and it becomes obvious that the decrease in the oil temperature leads to an increase in its viscosity, and the starter becomes quite difficult to turn the motor.

What motor oil is better than 5W30 or 5W40

Motor oil in the car is applied with the sole purpose - the formation of an abundant oil film on interacting engine parts. Between such details in the motor are very small gaps (just a few microns), which require constantly high-quality lubrication. What a lubricant brand is most suitable for each car, only the manufacturer knows.

Manufacturers, recommending the use of a certain type, first of all, take into account the design features of the most power unit itself, and already based on these indicators - the characteristics of the oil. Therefore, when choosing an oil, it is recommended to follow the manufacturer's instructions.

It is important to take into account that, besides the common classification of SAE, all lubricants must also comply with the requirements of the API and ACEA systems. Oil marking according to classification systems is indicated on the package, but does not attract the attention of car owners.

As for the popular oil brands of 5W40, 5W30:

1) The 5W40 brand is effectively holding a film, completely excluding dry friction of parts. It is ideal for modern high thermal tension units.

2) 5W30 marking oil has a much lower viscosity and is indispensable in cold weather, because it simplifies the start of the engine, but it becomes too fluid in hot weather. Under conditions T 120 - 140 ° C in the motor, the 5W40 oil viscosity is 50% higher than the viscosity of the oil marking 5W30.

Engine oil 5W30 or 5W40 - how to make a choice

It is worth noting that cars with different years of release have their own recommendations regarding the most optimal choice of engine oil. Experts recommend applying oil 5W30 if your car is more than seven years old, and its mileage does not exceed 70,000 kilometers.

In case the car's mileage exceeds this indicator, it is necessary to fill the oil 5W40, which is due to the fact that over time, the gaps between the elements included in the motor increase are increasing. Therefore, if oil was previously used with a low viscosity indicator, then you should go to 5W40. In addition to viscosity, these engine oils differ in the number of additives.

Professionals are also recommended to track the reaction of the car to different engine oil. The car itself will tell you what oil is best suited. For example, on some models of power units, the oil 5W30 does not rarely withstand increased revolutions (torque), which violates the stability of its work. In order to avoid such situations, it is recommended to use the most thick lubricant in structure.

Compatibility of oils 5W30 and 5W40

There are situations where in the event of a malfunction it is necessary to urgently add oil into the engine. As a rule, the lubricant is not always nearby, whose product originally covered in the engine.

The same applies to the viscosity index of the oil, and therefore you should know whether it is possible to mix oils with the label 5W40 and 5W30. It is worth noting that it is often not recommended to mix oil with a fully synthetic base base with mineral oil. It is also not recommended to mix synthetics and semi-synthetics, etc.

As for the lubricant with marking 5W30 / 5W40, it is possible to theoretically mix these liquids with minimal risks only if it is both products of the same manufacturer. Mixing products of different manufacturers is allowed only in an emergency situation, but considering that they must have the same basic basis.

From this we can conclude that the semi-synthetic is mixed only with the semi-synthetic, the mineral oil is mixed with a similar product, etc. However, it is clear to the question, it is possible to top up to the oil with marking 5W40, it would seem that the analog is 5W30, it is impossible for Each type of lubricant manufacturers use their additive packets that, after mixing, can enter the reaction.

Even if there were no consequences in the event of an emergency plot of liquids, this is an emergency measure that can not be applied constantly. After eliminating the breakage, it is necessary to immediately drain the mixed lubricant from the motor and be sure to change the oil filter, and in some cases it may even be needed before replacing the oil.

Let's summarize

Selecting motor oil, you have to make a choice of a product of a brand, and it often depends not only by the quality of the motor, but also other parts of the car. Professionals recommend flooding oil with higher viscosity, since its use is better protecting the parts of the motor. The 5W30 and 5W40 oils are a reliable assistant to the car engine.

Their differences are insignificant, these types of oil possess sufficient quality and meet all European requirements. The use of high-quality oil will save the power unit of the car from breakdown and will save on repair or replacing the motor.

Motor oil is one of the main liquids intended for car service, and in particular internal combustion engines. In order to ensure reliable operation of the power unit, it is necessary to approach the choice of engine oil.

This issue can help labeling that are on packaging with lubricating fluids. Some of them belong to one of the generally accepted classifications of the compositions of this category, for example, classification by the API specifications, ASEA, as well as one of the main systems - SAE. Understanding what labeling means, you can easily choose a suitable lubricant for a car.

The classification of the API divides all autosals into several categories in terms of application, for example, for gasoline or diesel engines, or suitable and the other. Still, the main system, separating lubricating fluids into classes, is SAE.

SAE classification

The main feature, according to which all cars are systematized here are viscosity, as well as temperature regime. These parameters are largely responsible for the reliable operation of the engine, as well as for its durability.

At the above feature in the presented classification, three types of lubricants are distinguished:

For the summer period;
For the winter period;
All-season or universal.

The first category of motor oils - summer - have a high level of viscosity, thereby protecting the internal combustion engine from overheating. Since this composition is seasonal, then it is necessary to change it at the end of the season - about once every six months per one who has a temperature regime corresponds to the natural period.

Summer lubricant can be effective at positive temperatures, but already at 0 it begins to stick (what can we talk about negative temperatures!), Losing a part of its properties, while another part is simply ineffective at the cold. As a result, it turns out that such a lubricant even negatively affects the operation of the engine.

Winter engine oils are more flowable and less viscous compared to summer. Thanks to these operational parameters, the lubricant quickly penetrates into all corners of the internal combustion engine, thereby ensuring the protection of its parts from friction. Also with these properties, lubricant provides a quick start of the car at negative temperatures.

As for the change of lubricant fluid, the situation here is the same as with summer oils: about once every six months you need to pour out the composition that is suitable for the season. The use of winter cars in the summer can lead to negative consequences that will affect the operation of the power unit.

Seasonal lubricants in recent years are all stronger than those of universal, all-season, since these substances have high-quality characteristics - the temperature regime of efficient operation, viscosity, fluidity - and winter, and summer car. For this reason, they are effective in use at any time of the year, and they need to be changed much less - every twelve months or more.

A little bit about the viscosity of the engine oil

First of all, the lubricant is designed to perform the main function: protect the parts of the internal combustion engine from friction, that is, "work on dry". In addition, this substance should ensure hermetic work of cylinders.

Operational characteristics may vary during the operation of the internal combustion engine under the influence of high temperatures. Depending on the intensity of the operation of the power unit, the temperature of the lubricant may reach a hundred fifty degrees Celsius.

It is in order to reliably protect the car engine, you need to carefully choose a lubricant for it, following the manufacturer's recommendations specified in the service book.

Decoding engine oil indices

On packages with these lubricants, you can see similar numbers and letters: SAE 30, SAE 0W 30 and other similar. Summer oils include those that are marked only by numbers (30, 40); To winter - 0 W, 5 W and others, the letter W is "winter" (eng. Winter), and the digit is a temperature range in which the lubricant can operate. All-season universal lubricating fluids are marked up as summer, and as winter, for example: 0 W 30, 10 W 30, 30 W 40 and others. The numbers mean certain properties of engine oil.

As for the 5W30 motor oil, it refers to the category of universal and can be used both in the summer and in the winter season. Decryption of both parts of the marking of this lubricant will allow you to learn more about its characteristics and properties.

The 5W index characterizes the low-temperature properties of the SAE 5W lubricant fluid. The viscosity of the composition allows the "cold start" of the car in -35 degrees. This figure is obtained like this: from 40, the number facing the letter "W" is taken away. The result of this simple calculation is the minimum lubrication temperature at which the composition of the composition of the lubricant system of the internal combustion engine without work is dry.

Attention! It should be borne in mind that at -35 the start of the engine may not immediately take place, since the oil is gradually thick, and the starter turns everything harder to turn it on the influence of negative temperatures.

The second part, the thirty index indicates that SAE 5W30 lubricating fluid will be effective in summer temperatures in approximately thirty, if the temperature of the engine during its operation is about a hundred-hundred and fifty degrees. With an increase in ambient temperature, lubrication efficiency will decline. Buy a composition with a good high-temperature viscosity is not worth it - it is better to follow the recommendations of the car manufacturer.

Attention! The basis of the engine oils of this category may be different, but mineral lubricant will be suitable for cars with large mileage and service life, and synthetics for new machines.

Some features

Most manufacturers of motor oils allow the use of their products at a temperature of B -20, however, in many regions, cold is much severe. For accommodation in such territorial zones, it is better to choose a lubricant liquid that has a higher level of viscosity;
A high level of viscosity is not a guarantee of good engine operation. The manufacturer's recommendations should be taken into account, some characteristics of the power unit, as well as the age and mileage of the car. In general, motor oils with a high level of viscosity are recommended to be used in sports cars. Too viscous lubrication by cars, for example, domestic production only hurts: At best, the engine power will simply decrease, at worst it will be required to repair.

How often should the oil change?

Do you often need to change the oil in the car?

In order to ensure the efficient operation of the internal combustion engine, it is necessary to replace the lubricant about every ten thousand kilometers of the mileage. You should also regularly measure the level of this substance in the engine (at least 2-3 times per month). In cars running on gas, clogging oils occurs as fast, so you can change it in twenty thousand kilometers.

Timely detection of a lack of lubricating fluid will avoid problems with the power unit (up to the need for overhaul).

Thus, deciphering marking that are on the packaging of lubricants, makes it possible to learn about the properties of the substance and choose the appropriate means.

Attention! Deciphering SAE 5W 30 oil and any other is approximate. Specific values \u200b\u200bdepend on the set of factors, such as the state of the internal combustion engine, temperature conditions of operation, age and mileage of the car, its overall technical condition. The manufacturer's recommendations should also be taken into account.

And a little about the secrets of the author

My life is not only connected with the car, namely repair and maintenance. But also I have a hobby like all men. My hobby is fishing.

I started a personal blog in which I share my experience. Many things try, various methods and methods for increasing the catch. If interested, you can read. Nothing superfluous, only my personal experience.

ATTENTION, only today!

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