10w 40 semi-synthetic in winter. Rating of motor oils for winter. What is hiding alphabet and digital designations

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In this article, we compare motor oils 5W30 and 10W40, we will analyze each of them, we learn their properties, areas of application, talk about their advantages and disadvantages in front of each other. And find out what to choose and in what way to give preference to one or another lubricant substance.

Criterias of choice

Everyone knows that motor oil besides its main task, lubricate the engine parts, minimize its wear, have a number of other functions. Additives that are added to the oil are capable of preventing oxidation, corrosion, purified from particulate sediments and shallow shavings.

Everyone makes his choice, pushing out what goals pursues and what wants to get from the engine oil and from the car as a whole.

Factors to consider when choosing:

Style ride.
Temperature regime - for different regions, we need different viscosity.
Mileage. IN new engine Pouring less viscous oil, in the engine with mileage - more thick.
Tolerances
Recommendations for a specific car.

Classification and decoding

Automas are systematized according to two main features:

Scope of application - API classification.
Oil viscosity - SAE classification.

API systematization divides oils in 3 categories:

S -Benzine aggregates;
C - diesel units;
EC is a universal protective lubricating liquid.

SAE 5W30 oil is a standard look of oil suitable for all seasons. The figure 5 in front of the letter "w" suggests that the oil is suitable for use at a temperature of -30 ºС "Winter". The digit after "W" says the positive "summer" indicator +25 ºС.

SAE 10W40 oil is one of the most common, as it is all-season and provides confident and reliable engine operation wide temperature range. Based on the marking, in winter up to -20 ºС, in summer no higher than 35 ºС.

What is the differeble 5W30 and 10W40

Both lubricants are universal and satisfy the requirements of most users. Having considered their characteristics, dealing with marking and classifiers, you can make conclusions and conclusions.

The difference between 5W30 and 10W40:

Temperature Range. Not a much significant difference, at temperatures from -25 ºС to +25 ºС, properties will be identical. But for some regions, it is necessary to use 5W30 in winter - less thick, and in summer 10W40 is more liquid.
An important difference: 5W30 - synthetics, 10w40 - semi-synthetic.
Price: 5W30 more expensive, 10w40 is cheaper.

What to choose?

Owning all the above information, the choice remains only for you. The main thing is to ensure the smooth start of the engine, which will increase its resource.

We will summarize when and which viscosity to choose:

Big Mileage - 10W40, New Engine - 5W30.
For northern regions, low temperatures in winter - 5W30, for southern hot summer - 10W40.
For domestic cars You can use semi-synthetic 10W40, for foreign cars it is desirable synthetic.
Operating conditions. The larger the load on the engine, the fat need a mixture.

Before choosing an oil, check the car's instruction, in the overwhelming majority you need to use exactly the one that the manufacturer recommends.

Pay attention to the manufacturer tolerances. Engineers who design the engine are calculated on a certain viscosity of the oil. The fact is that the viscosity of the oil variable. At engine temperatures 50, 100, 150 ºС - the viscosity of the oil will be different. When you are consciously using a more thick mixture - an overheating of the cylinder-piston group is ensured. If a mixture of fat, which is provided - you can get a "wedge" engine.

Therefore, the tolerances for each car were invented, which should not be neglected, especially if you are the owner of an expensive foreign car.

Is it possible to mix 5W30 and 10W40

Despite the fact that both products have quite a lot in common in their characteristics, mix them forbidden. Do not forget that 10W40 semi-synthetic oil, and 5W30 synthetic. Having various bases and packages of additives, they may unpredictably affect each other, and lead to deposits! Replacing and topping the oil is allowed only one base, one manufacturer.

In the case of transition from 5W30 to 10W40, and on the contrary - be sure to flush the engine.

Perform the washing of the engine as prevention - not recommended.

Replacing oil | 5W30 VS 5W40 | Is it possible to replace 5w30 on 5W40 and vice versa

Vissedy additives motor oils Unol TV # 2 (1 per)

Motor oil is designed to protect one of the most capricious car systems - the engine. From right choice Lubricants depends the trouble-free cold launch of the engine in the absence of oil starvation, its smooth and reliable operation in a wide range of everyday and extreme operating conditions, the period to the next overhaul of the "hearts" of the car, fuel consumption and other indicators.

Which oil to choose

The most optimal lubricant "The fact that the doctor prescribed" is usually an automaker indicating in the instruction manual, and it is desirable to choose this option. But, suddenly, the leadership was lost or, as often happens, not one brand and the type of oil is recommended, but what is it better to use in this case?

The output one is to be able to properly decipher the marking, understand the characteristics and fitness of the consumable material to weather temperatures and a particular motor, orient to the ratio of properties to the operating conditions.

It is more difficult to make a choice between lubricating fluids with similar index values. For example: What is different from 10w 40?

Or, 5w40 or 10w40 will fit in winter time of the year? What kind of oil is with high temperature modes, and what is the more thick at low ambient temperatures?

Often, the drivers are wondering if it is possible to mix 5W40 and 10W 40 from different or one manufacturer if both types of oil mean in the recommendations? Let's all in order!

Briefly about the main classifications of oils.

The most important criteria include viscosity and basic base parameters. IN international format These parameters are considered by two main systems for the classification of motor oils:

1. In terms of density and viscosity Lubricating fluids are made to divide the classes on the SAE system.
In this classification, all oils are divided into summer, winter and all-season. In terms of labeling, the difference in motor oils 10W40 and 5W40 is determined in this way:

10W (digital value and litera "w") - winter;
40 (figure only without alphabetic designation) - summer;
5w40 (two digital designations with a Literary "W" in the middle) - all-season.

In practice, only all-season oils are used everywhere. Availability in marking Litera "W" (from English. "Winter" - winter) indicates the possibility of its use at very low temperatures. The figures indicate the viscosity indexes of a particular product: Winter index (the minimum temperature of a comfortable cold start) is written to "W", the summer index (kinematic viscosity, determined by laboratory at a temperature of 100 degrees) is written after "W".

For example, if we consider what the difference between the engine oils 5W30 and 10W 40 by the winter parameter, then the 5W oil will have a temperature of a successful cold start lower than 10W oil. As for the difference in the same oils 5W30 and 10W 40 on the summer index, the lubricant with the index 30 will have a lower kinematic viscosity than with an index 40.

2. Basic basis On the Russian market, the API classification is more often used, including three types of chemical bases:

fundamental - mineral and synthetic,
and also a semi-synthetic, when mineraute with synthetic in the percentage ratio 50:50 or 70:30 is mixed.

It is worth noting here that most branded producers produce expenditure material with labeling 5W30 and 5W40, as a "hydrocracking" synthetics, and marking 10W 40 as semi-synthetic.

5W40 marking - decipher

To determine the main characteristics of oil 5W40 Consider its parameters in accordance with the marking:

According to SAE classification - It is all-season engine oil that can be used at any time of the year and does not require replacement with the change of season.
By aPI classification In most cases, this lubricant will relate to the "coarse" synthetics, which is recommended for use in any kind of engine: gasoline and diesel, including with a turbocharger of various modifications, multiclap, equipped with intercooler;
Winter index 5W synthetics says that when frosting up to -30ºC oil will provide free pumping lubrication with oil pump and engine launch;
Summer Index 40 says that kinematic viscosity is 12.5 - 16.3 WST and will stably maintain its characteristics at the conventional temperature of + 40ºC;
How synthetics has high quality pack of additivesproviding excellent detergents and energy-saving properties, low evaporation rate.

What will tell Marking 10W 40.

Deciphering the abbreviation 10W 40 can be said as follows:

For two viscosity indexes, the SAE classification is all-season consumables;
According to a base basis, 10W 40 is semi-synthetic, which indicates a sufficiently high density and viscosity;
Winter viscosity index 10W confirms the possibility of a comfortable cold start of the engine at a temperature of 25 degrees below zero;
The number 40 shows the value of kinematic viscosity in accordance with the standard - 12.5 - 16.3 CR., Keeps viscosity characteristics to + 40 s;
Suitable for use in multiclapped gasoline and diesel engines, including motors and injection and turbocharging;
It has good wear-resistant, anti-bank and fuel-saving indicators.

Comparative characteristic 10W 40 and 5W 40.

Having considered the classification parameters of oils 10W 40 and 5W40, we see that in terms of summer operating conditions and seasonality of use, these lubricating fluids do not have any differences. We list the differences of oil 5W40 and 10W40:

5w40 winter oil provides safe cold launch Motor at a temperature of -30ºC, unlike 10W40, which can be used not lower than 25ºC frost, in connection with which the "five" is more suitable for use in winter, and the "dozen" in summer;
Since 5W40 oil is synthetics, it will be fat than semi-synthetic 10W40 under the same operating conditions, so in more worn engines it is desirable to pour the "dozen";
Since the interval between the viscous 5W40 oil performance is less than 10W40, the 5W40 lubrication range will be larger;
From the calculation price Policy The 14W40 semi-synthetic will be significantly cheaper with similar qualitative characteristics with 5W40 synthetics.

Is the mixed "diet" suitable?

If we consider the question: Is it possible to mix the oil 5w40 and 10w40, then we will define the negative consequences of such a "nutrition" of the engine:

Despite the fact that all lubricants are manufactured in accordance with standards, various manufacturers use exclusive additives, which in the process of oil can be incompatible and harm the motor;
In the 5W40 synthetics, it is not worth topping the thick semi-synthetic oil of 10W40 in the winter period, because Due to the increase, it may not pump the lubricant over the system and provoke dry friction of non-lubricated parts;
With an extreme situation, it is allowed to add synthetic material in semi-synthetic, which, of course, reduce the thickness of the lubricating film, but will not make significant harm.

In any case, when choosing a motor oil, you should be guided by the recommendations of the manufacturer of vehicles, because lubricants from well-known brands cannot be bad or good, and will become either suitable or not suitable for a particular motor or for specific climatic conditions.

In the marking of any engine oil, the first digit in front of the W (letter means that the lubricant can be used in winter) contains information about the maximum low temperature at which the oil retains its characteristics and does not thick. If it is "0", it can be poured under frosts not lower than 35-40 ° C. The digit "20" is indicated - at a lubricant temperature below -10 ° C, the engine is better not to start. The second option is suitable for winter in the Krasnodar Territory, and for the northern regions it is better to choose "zero". Which oil to fill in the engine in the winter decides the owner himself, given the climatic features of its region. It should also be remembered that the lubricant must comply with the recommended motor parameters - when reaching operating temperature High fluidity can cause increased wear of parts due to too thin oil film.

In our review we will look at the best lubricating liquids on the frost resistance presented in the domestic market. To participate in the oil ranking, it was selected on the basis of not only characteristics. The information obtained by testing the product by independent experts, as well as consumer reviews, was taken into account.

Top motor oils for winter: economy class

Thanks to the use of innovative technologies, oil refumerals can reduce the price of engine oil. Please I. domestic manufacturersthat provide Russian car owners quality consumable material For the engine.

3 TNK Magnum Motor Plus 10W-30 4 L

Favorable value
Country Russia
The average price: 461 rubles.
Rating (2019): 4.8

All-season mineral oil TNK Magnum Motor Plus 10W-30 has improved characteristics. At an affordable price, motorists are offered a modern product, which can be poured into the power units of domestic machinery and foreign cars. Confident launch of a gasoline and diesel engine occurs at temperatures up to -25 ° C. It is allowed to use not only in the passenger cars, but also in minibuses, light trucks. Thanks to the unique package of additives, high resistance to oxidation, wear and corrosion has been achieved. During the development, the conditions of operation in Russia and the CIS countries were taken into account.

Motorists in reviews mention the soft operation of the engine and in summer, and in winter, the preservation of oil properties during the entire service life. Of the shortcomings, the owners of the auto mention increased flow At the avgar.

2 Gazpromneft PREMIUM N 5W-40 4 L

The most affordable synthetic
Country Russia
Average price: 1081 rub.
Rating (2019): 5.0

For regular trips in winter, the motor requires synthetics, which retains its viscosity at low temperatures. Gazpromneft PREMIUM N 5W-40 oil is inexpensive, but high-quality material with an increased service life. It is recommended to pour into gasoline and diesel engines of domestic and foreign cars. The use of modern technologies made it possible to reduce the consumption of lubricant material on a volunteer, increase the resistance of parts to corrosion.

Domestic car owners advise you to choose this oil for several reasons. First, consumers please the affordable price. Secondly, the manufacturer provided reliable protection of its product from fakes. Thirdly, the engine confidently starts in a harsh winter. Some owners note the disappearance of such a problem as a voligator.

1 LUKOIL Luxury semi-synthetic SL / CF 10W-40 4 L

Best semi-synthetic
Country Russia
The average price: 820 rubles.
Rating (2019): 5.0

The Russian company LUKOIL produces high-quality semi-synthetic oils. Product LUKOIL SL / CF 10W-40 Suite is a all-season lubricant For gasoline and diesel power units. Oil can be poured into the motors of domestic cars VAZ, import car, minibuses and commercial trucks. The use of semi-synthetic from LUKOIL increases the service life of engines thanks to a light start and reliable defense from corrosion. Combustion products do not have a destructive effect on the car catalyst.

Opinions of domestic motorists converge in the fact that this semi-synthetic has excellent quality at an affordable price. Only during frosts below -20 degrees there is a thickening of the product.

Top motor oils for winter: average price segment

In the middle price segment, many domestic and foreign manufacturers of engine oils work. They can be used for summer, and for winter. Most often such lubricating fluids are poured into the engine owners of new vases and not dear foreign cars.

3 Mobil Super 3000 x1 5W-40 4 l

Excellent option for VAZ cars
Country: USA (produced in Finland)
Average price: 1653 rub.
Rating (2019): 4.9

One of the manufacturers of motor oils that the VAZ plant recommends is the American firm Exxon Mobil. An excellent choice for the owners of domestic equipment, which spend on the road all winter is the Super 3000 X1 5W-40 product. Due to the synthetic basis, the viscosity is maintained at low temperatures during the entire service life. Oil is suitable for intensive use of cars, both on highway roads and in a metropolis. The use of unique additives allows you to reliably protect the engine parts from wear and corrosion.

The owners of the car that decided to pour into the power unit is oil immediately appreciated high consumer qualities. Melted the launch of the engine in the frost, the oil level is saved unchanged to replacement. In the summer there is an increased passage when driving at high speed.

2 Shell Helix Ultra Ect C2 / C3 0W-30 4 L

The best winter oil For diesel engines
Country: United Kingdom, Netherlands
The average price: 2383 rubles.
Rating (2019): 5.0

Most. suitable oil For low-cost cars with diesel engines is the product Shell Helix Ultra ECT C2 / C3 0W-30. Chemists from the UK and the Netherlands created an advanced formula that reliably protects the parts of the engine from the harmful effects of the combustion products of the diesel. Innovative synthetics can improve technical specifications Engine, reduce exhaust toxicity. The power unit without problems is launched into the most severe Russian winter.

Many owners pour this oil encourage the recommendations of the car manufacturers. They do not regret it, because according to reviews it is clear that the shell Helix Ultra ECTR ECT C2 / C3 product is fully coping with its responsibilities.

1 Toyota SN 5W-30 4 L

The most popular specialized product
Country: Japan
Average price: 2610 rub.
Rating (2019): 5.0

Especially for toyota cars Developed oil with the same name. The Toyota SN 5W-30 product is recommended for the entire range of cars with gasoline engines. Its popularity is explained by high technical characteristics. Among them should be the possibility of operating the machine at low temperatures, the presence of unique antioxidants, energy-saving properties. The oil prevents the deposits on the details of the Nagar, retains life to the glands and other sealing products. The product is supplied in metal canes, which makes it difficult to fake.

Toyota owners in Russia, which regularly pour this oil, are satisfied with the easy launch of the motor, cleanliness power aggregate. The engine works quietly into any weather. Some buyers are not satisfied with the price.

Top Motor Oils for Winter: Premium Class

To ensure the trouble-free operation of high-strength and turbocharged engines on expensive foreign cars are capable of high-quality lubricants. Many car owners prefer to pour elite engine oils to avoid further the cost repair of the power unit.

4 LIQUI MOLY SYNTHOIL LONGTIME PLUS 0W-30

Easy launch in severe frost
Country: Germany
Average price: 7557 rub.
Rating (2019): 4.5

What kind of oil to pour into your car to make it calmly at the air temperature approaching -40 ° C? Most drivers will stay at home on such days, and only using Liqui Moly Synthoil Longtime Plus 0W-30 (or another lubricant, represented in our review), wrapped with warmer, will go hook the engine.

Equally suitable for diesel and gasoline units, this engine oil provides:

Easy engine launch in winter;
Fuel economy;
Suppression of oxidative processes, low voltage consumption and slow aging;
Protection against engine overheat (has a high heat capacity).

In addition, the owners in reviews mark excellent detergents and the lack of new deposits in the engine. Also, when using, many drivers are recommended to make sure not only in the compatibility of the product with the motor, but also in the authenticity of the engine oil.

3 Ravenol Arctic Low Saps Als SAE 0W-30

The lowest freezing temperature
Country: Germany
Average price: 4251 rub.
Rating (2019): 4.8

The frost temperature of this oil is located at -52 ° C, which allows it to be used in engines operating in harsh climatic conditions. The lubricant is characterized by a high viscosity ratio and forms a solid oil film on the rubbing surfaces of the engine parts. Good pumpability in the system and safe launch power plant It is even possible in lung frosts when the thermometer mark falls below -35 ° C.

it best greaseWhich you can imagine - such characteristics give in their reviews car enthusiasts, which have become the water oil of the ARCTIC LOW SAPS ALS in the conditions of winter. With it, it is possible not only to reduce fuel consumption (even with high operational loads). The oil makes very slowly (high-quality synthetics with minimal impurities), prolongs the "life" of the particle filters or TCW type catalysts (three-component) and has a low evaporation.

2 Motul 8100 X-CESS 5W40 5 l

Best Synthetic for Powerful Motors
Country: France
The average price: 3536 rubles.
Rating (2019): 4.9

In cars equipped with powerful motors, in winter it is better to pour synthetic motul oil 8100 X-CESS 5W40. The French product has excellent resistance to the aggressive influence of combustion products. Oil film reduces the friction of parts in loaded diesel and gasoline engines. This oil is recommended for use such well-known auto gygids as GM, BMW, Porsche, MB, Renault and VW. It is allowed to use during the warranty period of the car.

Car owners recommend choosing this type of oil not only for expensive foreign cars. Some caring masters of VAZ cars are poured Motul 8100 X-Cess 5W40 into the engine, which is positively reflected in the winter. From flaws, users indicate a high consumption material and its price.

1 Castrol Turbo Diesel 0W-30 4 L

The most leaning oil for turbocharged engines
Country: Germany (produced in Belgium)
Average price: 2896 rub.
Rating (2019): 5.0

Synthetic oil Castrol Turbo Diesel 0W-30 is designed specifically for high-loaded diesel engines With turbines. It reduces the level of ejection of dangerous compounds into the atmosphere, ensures the purity of the exhaust path. Meets the strict requirements of such automakers like BMW, Mercedes, Volkswagen. In the process of manufacture, the latest Titanium FST ™ technologies are used, which make a protective film durable. It can withstand extreme loads, forming the absorbing blows of the layer.

Domestic car owners in responses confirm the high quality of the product. The engine works quietly, even in Siberian frosts, from replacement to replace it is not required to pour additional portions. Over time does not darken.

Motor oils can differ very much in their characteristics - their parameters depend on the method of production, use, as well as the chemical composition of the main raw materials.

One of of the most important characteristics Lubricants are the ability to work in various climatic conditions. In our country, frost resistance is much greater, since in some of its regions most The year is preserved negative ambient temperature.

Choose the best winter engine oil will not be easy, since a lot of manufacturers are represented on the market, which offer their products having unique properties. However, our rating will help you to take the right decision that will allow to extend the time of the smooth operation of the car.

Synthetic compounds

Best oils for modern cars Synthetic mixtures are considered. Them distinctive feature It is adding a huge amount of artificial additives that remove accumulated deposits, protect the metal from destruction, the sulfur oxides associate and perform other functions.

Synthetic engine oils have a high fluidity, due to which they create minimal resistance and significantly reduce the friction of moving parts. However, this feature does not allow them to be used in old or highly worn engines - for example, they are not suitable for the VAZ of classical models.

Universal option

Numerous studies show that the best is Shell Helix. ULTRA, corresponding to 5W40 classification. Certificates issued by Bentley, Ferrari and Lamborghini companies are talking about his quality - they allow you to use this oil in their engines during operation in a cold climate.

Shell Helix Ultra 5W-40 for gasoline engines

The main advantage of such engine oil is to preserve the unchanged consistency even at a temperature of -40 degrees. Due to this, a confident start is provided under any circumstances, the load on the starter and the car battery decreases, and the rate of wear of the movable compounds is reduced 5 times 5 times with a negative air temperature.

If you are looking for a winter diesel oil, You can choose Shell, without even considering other options. It is adapted to operation on any fuel, including diesel, compressed and, and also provides effective lubricant Turboculant systems.

Shell Helix Diesel Ultra 5W40 for diesel engines

Will not be a problem and operation in modern engines With recycling exhaust gases either by other devices - oil ensures the purity of the exhaust corresponding to the Euro-6 standard. Its most important advantage can also be called excellent detergents - when using this oil, the amount of deposits decreases 2-20 times compared with the compositions of competitors.

Maximum resource

The second place confidently occupies the British Castrol EDGE oil, corresponding to the same viscosity standard as the products created by the Dutch. It is worth remembering that the company Castrol is a division of the international concern British Petroleum that invests huge funds into the development of innovative petroleum products.

The result of their research was the oil that forms a viscous protective film in the areas of increased friction, but remains liquid in all other parts of the lubrication system. Due to this, the engine wear is reduced in all climatic zones and at any level of load. Experts say that the minimum increase in the resource on engines Volkswagen. When using this lubricant is 10%.

If you doubt what winter oil is better to pour into the engine, you definitely choose Castrol. For use in cars and easy commercial vehicles, as well as in diesel, gasoline and gas motors.

In addition, such oil was certified and domestic producers, which will become a good news for car owners of VAZ. The only substantial disadvantage of such a lubricant is bad compatibility with high-breeding - owners sports cars better consult with a mechanic before purchasing oil Castrol.. In addition, the creation of an anti-wear film requires greater viscosity than Shell that hesitantly worsens the cold start of the motor.

For our roads

If you are looking for a lubricant for a car that will be operated not in the best conditions, it is worth a preference to Zic XQ Ls. Such oil is capable of working in conditions of high sulfur, phosphorus and iron in fuel, which is typical of Russian refills removed from major cities.

Due to this, it is possible to significantly reduce the number of deposits in different parts of the engine, as well as to improve the ecological exhaust class. The advantage of such engine oil is both resistance to low temperatures - like Shell, it does not change the consistency even with the strongest frosts.

The oil is excellent for diesel engines, since it reduces the level of hydrophope ash, increasing the reliability of the vehicle. It can also be used in highly affiliated engines with high degree Compression, since lubricant has a multiple stamina supply.

Video O. zIC oil XQ Ls:

The only drawback can be called a fairly high price and a small prevalence of products of the Japanese brand in Russia. In addition, the manufacturer recommends using it only with original oil filtersTo avoid reducing the performance of the lubrication system.

Semi-synthetic

The marking of winter oil in the level of viscosity 10W40 is likely to mean that you are semi-synthetic lubricant, which is much cheaper than pure synthetic compositions.

In its chemical composition, there are a lot of natural components that are obtained from crude oil, but artificial additives performing various functions are also present in this product. Semi-synthetic oils have an increased viscosity, so they are recommended to be used in the following cases:

In old cars with a small capacity of the pump system of lubrication;
In worn engines with a large amount of cavity cavities clogged with combustion products;
IN commercial machinerydesigned for an increased resource of operation;
In low-rod diesels.

Due to this, semi-synthetic oils are considerably popular in Russia and the CIS countries, where average age The fleet is great enough.

Minimal wear

Optimal option For foreign cars with is a semi-synthetic mobil oil Ultra. Such a brand of winter oil is characterized by the ability to significantly reduce friction even at very low ambient air temperatures.

Due to this, it is possible to minimize wear and significantly increase the engine resource. In addition, with a sharp decrease in temperature - by 20 degrees per day and more, such oil manifests itself as it is impossible, substantially facilitating the cold start of the motor. Thanks to this, it is recommended to be used even in the complex climatic conditions of the north of our country.

The advantage of oil can be called relatively high cost For the production of a foreign brand. In addition, the certification of this lubricant was carried out and domestic manufacturers, which allows it to be used in injector motors VAZ or gas.

The only minus is some loss of properties with long-term influence of low temperatures. If your car spends the winter in the open sky, immediately after heat offensions, the oil is recommended to change. This will significantly reduce the level of wear and achieve an increase in motor resource by 5-10%.

Domestic innovation

A good option for all-season operation is russian oil Lukoil Suite - It allows the motor to work with a small wear at any temperatures. Lubricant preserves almost unchanged consistency with severe frost and terrible summer heat.

However, it is still not designed for a long effect of abnormal temperatures, so after two weeks of frosts under -40 degrees, it is not necessary to expect a very easy motor launch. But in such a semi-synthetic oil added a huge number of protective and detergent additives. If it is poured into a new engine, it will be possible to prevent the accumulation of combustion and angry products, as well as protect the power unit from the destruction of the metal, the formation of cavities and microcracks.

The oil is recommended by many well-known manufacturers - in particular, it is the only one in Russia, which received the Certification of BMW, Mercedes and Audi at the same time. It can be used in diesel or gas engines without prejudice to them, as well as in petrol aggregates With turbocharged, gases recirculation system and direct injection.

Oil shows excellent results When operating in a lot of commercial technique with an increased level of loads. In addition to moderate temperature resistance, its minus can be called high cost for domestic products.

Potential leader

If you ask what winter oil is better among semi-synthetic, then you can again recommend Shell, but now choose the composition called HX7. It is ideal for modern vehicles due to the presence of a large amount of detergent additives and substances neutralizing sulfur oxides. In addition, moderate viscosity can significantly reduce friction, increasing the resource of the power unit. In winter, the consistency of such a product varies very slightly, which contributes to the relief of the cold launch.

Shell Helix HX7 - leader among oils

Such modern oil for 4-stroke engines could be a rating leader if it were not for one interesting circumstance. This lubricant is made on four plants located in France, USA, Russia and China.

At the same time, only the first two options fully correspond to the properties described above, and we are almost impossible to buy oil from the USA. Products from Russia and China are ahead of many oils of competing brands, but significantly inferior original Shell. from France. Therefore, oil is recommended to buy in large service centers and stores or order it via the Internet, having received a guarantee that the French product will be provided to you.

Selecting the oil for the winter, be sure to take into account that it should have a low viscosity - the first figure in the marking should not exceed 10. Bay mineral oil, you risk finding that you will not start your car without further engine warming. The optimal option will be the so-called arctic compositions that thicken only at temperatures below -50 degrees.

They can be found as among synthetic oilsand in the semi-synthetic group. In addition, it is better to use the products of famous brands - Shell, Mobil, BP, Liqui Moly.Because these manufacturers laid a lot of money in the development of perfect oil.

The engine is one of the most "capricious" and expensive parts of the machines, so in the operating manual, automakers always indicate those fluids that can be poured into it. Unfortunately, over time, this manual may be lost, it is also not always possible to find this electronic Russified version, so everyone is important to know how to correctly read the marking of motor oils and know what the oil is 5W40 from 10W40.

Motor oils: species and features.

About what properties should have a motor lubricant, engine manufacturers are still in the process of their design and manufacture. Then the selected options are thoroughly tested and only after that are written in recommendations for use with an accurate indication of the type of oil and its temperature-viscous characteristics: synthetic, mineral or semi-synthetic is a lubricant, as well as summer, winter or all-season.

Mineral engine oils are produced based on crude oil. They are distinguished by high density and a small cost. However, the range of liquid data is significantly limited.

The semi-synthetic lubricant is made from mineral products, which add synthetic additives. This slightly increases the cost of data of motor oils, but at the same time increases their quality.

Synthetic engine oils can, like mineral, produced from oil, and can - from ethylene (natural gas). So as not to force the data technical fluidsThanks to the ability to manage the flow of chemical reactions at the output, high-quality products are always obtained, capable of working in a large temperature range, which has excellent detergents and is practically not evaporated. The synthetic flaw is only one - high cost.

As for the classification of seasonality, the summer oil will distinguish the maximum viscosity that contributes to the preservation of the oil film on the items of the part even at the highest temperatures, but at the same time prevents light engine launch in winter; Winter - on the contrary, will provide good penetration lubricant In the most smallest DVS gaps during the cold weather, and in the summer it can leave them at all without lubricant (at high temperatures it will become too liquid and strokes with parts); All-season oil - absorbed all the advantages of both these options, so it can be perfectly cope with the tasks and in winter, and in the summer.

5W-40.

It is all-season conventionally synthetic oil. It is called conventionally synthetic because, in contrast to 5W30 (100% synthetics), there are among 5W40 and semi-synthetic options. They are published, as a rule, domestic and non-branded producers. Therefore, you always carefully read the packaging, not only a big font ( sAE classification), but also what is written below with small letters (API classification).

We will not go into all exceptions and consider the classic option - 5W40 in the class of synthetic oils. Its main characteristics are:

universality - oil applicable for most types of engines - diesel, gasoline and many modifications of turbo diesel engines;
the possibility of use at very low temperatures - this indicates the 5W index, which allows the use of this oil into severe frosts - to -35 ° C.

10W-40.

Always semi-synthetic all-season oil, regardless of the manufacturer. From completely synthetic lubricant It is distinguished by the process of synthesis and purification, as well as the number of additives present in it.

The characteristics of this engine oil include all the same:

all-season - lubricant perfectly copes with its duties at any time of the year;
high rates of density and viscosity (this is evidenced by the number 40 in its marking);
and also the possibility of use at very low temperatures.

Only a negative temperature threshold here is less (the closer the number to 0, the less oil It is afraid of strong frosts). It is -25 ° C.

Thus, the answer to the question is the difference between the oil 5W40 from 10W 40, the resulting minimum, as well as the number of impurities and additives.

What to use?

Based on the foregoing, you can make the following conclusion: in the regions with a moderate (average) climate, it is better to use the oils of the brand 10W40, in the cold - 5W40. It is possible to apply lubricant data in summer, and in winter (this is evidenced by their all-season marking on SAE, in which the minimum and maximum temperature thresholds are simultaneously indicated). However, before pouring or another oil itself into the engine, try to find the instruction manual to make sure that your car manufacturer allows its use in this particular car. Otherwise, you risk quickly tooling your motor and "get" on a very expensive repair. By the way, so that this does not happen, you should also not mix oils different marks and manufacturers, because Each of them applies its types of additives and additives that "colliding" with each other can enter into a completely unexpected reaction.