Rating of motor oils for winter. Winter oil selection criteria for engine oil 10 per 40 can be ride in winter

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Using high-quality engine oil, you retain the normal health and life of the engine. With the help of simple compliance with the factory recommendations, you can protect the engine from all sorts of problems and troubles.

Most likely, you thought about whether you should not change the usual brand and type lubricant. Especially interested in many auto owners than 5W40 oil differs from 10W40. The first digit in the designation of the engine oil is the degree of conservation of all characteristics at certain temperatures. It is this parameter that is different in these lubrication types.

The difference turns out to be quite tangible if you are operating a car in difficult conditions with large frosts in winter. But in the middle lane of Russia or in the southern part of the state you will not notice a special difference.

So, today we will discuss which oil is better, what is the difference between these two options, and which is better to choose that the engine worked stably. It is worth considering that the optimal solution will most often comply with the recommendations of the car manufacturer. Other options can lead to trouble with force aggregate.

Comparison of oils 5w40 and 10w40

It is believed that one of these types of liquids turns out to be thicker in its work. But in fact, the viscosity is indicated by the second digit - 40. And in this parameter, two data type of lubricant is absolutely identical.

The letter W denotes the possibility of winter use of the car. But first of all, we must define a real difference - what differ 5W40 from 10W40.

There are several items that should be noted:

The main difference is to preserve the primordial parameters at a certain temperature. The material with an index 5 can withstand temperatures up to -30, and 10W is intended only for frosts not lower than -25 degrees.
The viscosity is the same, but only to the temperature in -25 degrees Celsius. If the temperature is lowered below, the viscosity begins to change. Lubrication with index 10 freezes and becomes too viscous.
Only winter operation makes a certain difference, but it is worth noting that by the price these materials differ quite strongly. A more hardy option will cost more.
The technical fluid with a large temperature threshold is complemented by various additives that do not always well affect the operation of the engine. So it is better to use only the recommended brands of liquids.

For many engines, material is required than the 40th option. In this case, it is used more expensive oil 5W30. It is worth remembering that we consider today the difference is not viscosity, but in temperature modes of operation.

If you poured a more affordable 10W material, you will have to abandon the operation of the car at temperatures below -25 degrees. This is the only serious difference in these types of material.

Is it possible to mix different types of oil on top of the plot?

Mixing oils

In winter, it is often possible to notice the burnout of the lubricating fluid. The problem is that the lubricant does not have time to warm up normally before serving in already spoken parts and mechanisms.

With low capacity of the technical material, its bundle occurs, the liquid will easily burn out, the slags are settled. You have to top up a certain amount of lubrication into the carter. And in this aspect there are certain disputes about what will happen if mixing different stamps and types of liquids.

Answers are quite simple:

mix lubricating fluids 5W and 10W is unacceptable, they are not mixed to the end and can bring problems;
the temperature mode of the lubricant fluid will be unpredictable, as well as other properties;
especially serious problems will be with mixing semi-synthetic and synthetic lubricant;
also, do not mix technical fluids of various manufacturers, it can lead to certain problems;
note that 5w40 and 10w can quickly spoil when working in one crankcase, so the replacement will be required soon.

When choosing an oil 5W40 and 10W40 should pay attention to the proposals of one brand and one type. It is better to immediately take a material with a certain amount on the plot. It will be optimal for each car.

But if you do not have options, you need to top up, and there is only a non-rigorous type of lubrication, you can use another material. After that, you will have to replace the oil in the engine crankcase as quickly as possible.

Different brands and price segments - what to choose?

Oil of various brands

To select a suitable lubricant fluid, it is necessary to seriously explore the market, look at all the proposed options. Often an unknown manufacturer turns out to be quite an interesting solution.

So the market was the Turkish 5W40 oils with excellent characteristics and unknown names. They serve in perfectly, retain their properties and meet all necessary criteria. A good choice You can do in such parameters:

price - Do not choose offers from the cheapest class, they, as a rule, are substantial;
manufacturer - you can give preference to the brand with good history and excellent customer reviews;
packaging - oils on spilling rarely give nice results, it is better to choose a kanister played at the factory;
additive volumes - you need to study the composition, look at the additives and additions used in the production;
category and purpose - there special fluids Or universal options for any car.

But first of all it is important to pay attention to the manufacturer's recommendations. Do not think, pour corporate oil or 5w40 another manufacturer. If the market is available on the market, it is worth using them.

This is the optimal choice for your acquisition. Moreover, products have special characteristics And it will be predictable.

Let's sum up

Topping the engine

Do not experiment with engine lubrication oils. If the power unit has thin walls between the cylinders, the use of incorrect lubrication will result in certain problems in operation.

Even if the engine housing is thicker, this does not mean that experiments with a power unit can be carried out. Most likely, this approach will not be beneficial in the long run.

Instead of the recommended 10W40, you can use 5W type lubricant if you operate the machine in difficult climatic conditions. And this option is suitable only in winter. In summer, it is still better to return to the factory parameters. To do this, it is enough to see the manufacturer's recommendations and acquire the necessary type of lubricant material.

For many experienced motorists, it is not a secret that the quality of engine oil and a number of characteristics of the lubricant will depend on. If in the summer to the material is put forward, mostly, the requirements for protecting parts under conditions of high temperatures and loads, then in winter, other additional parameters must be taken into account. Immediately note that division on winter oil For the engine or oil for the summer today almost completely lost its relevance. Modern market The fuel and lubricants offer universal type products.

In other words, all-season engine oil for year-round use is widely represented. Moreover, the line between the products only for and engines is gradually erasing, as an increasingly and more often a variant is proposed that can be equally pouring both in diesel and in petrol aggregate. At the same time, the unambiguous and complete transition to the universal oil for gasoline and diesel, it is not possible to achieve, taking into account the characteristics of the work, types of fuel used and other differences in the units on the diesel population and gasoline. In this article, we intend to talk about what oil is better to pour into the engine in the winter, what is the conditional marking of the winter oil for the engine, how to monitor the level and correctly add lubricant into the motor during the winter operation of the car.

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What oil to pour for winter to the engine

As mentioned above, the products on the fuel market in the overwhelming majority are all-season. At the same time, many car owners before the onset of cold weather are still in a hurry to change lubricant. Immediately we note that such a winter is very recommended, especially in cases where the old lubricant worked half or two thirds of its resource before planned replacement.

We now turn to how to choose the oil for the winter season, taking into account the viscosity and other parameters that are extremely important for the serviceable the work of the DVS and it properly operation. Let's start with the fact that you need to pour those products that are recommended by the car manufacturer. This information Contained in the instruction manual. In this case, the list is not limited to one or two positions. More from the parameters and quality of the bold lubrication will be dependent on not only the motor life. Oil affects the elasticity and noise level during motor operation, fuel consumption, lightness of launch at negative temperatures, etc.

It is well known that a more viscous lubricant creates a thick oil film, which allows the motor to work quieter. Also, such material is less spent on a volunteer, risk, gaskets and other sealing elements are reduced. For this reason, in the summer, car owners, especially with mileage of more than 100 thousand km, prefer to pour into the motor with greater viscosity, while remaining within the framework of admission and recommendations of the manufacturer of the engine. The argument is that the mileage in the conjugate pairs slightly increases the gaps. In other words, if the motor was initially floodied with an index, for example, 5W30, then after a run in 100-150 thousand. km. The transition to 5W40 or 10W40 is carried out. It should be borne in mind that more viscous techniques in conditions of negative temperatures are more thick and worse pumped. As a result, the engine that normally started on a more viscous oil in summer, may experience difficulties during the launch of winter. In this case, the answer is whether it is possible to change the oil in the winter in the winter, will be completely informed.
Also let's see how to check the oil in the engine in winter. To check it will be enough to remove oil Prope Before cold launching And to look at what condition is a lubricant, at what speed the oil is assembled at the end of the probe, etc. If you can see that the lubricant is very thick, then the need for replacement is quite obvious. By the way, taking into account the fact that lubricant in the motor in the cold is thick, it is useful to know how to correct the oil into the engine in the winter. As is known, unwanted for the engine, that is, the lubricant is poured strictly by level. The oil level itself in the winter is checked in the winter is not a more familiar way (after parking), and after preheating in the armhole to operating temperatures.

The fact is that if evaluating the oil level on the cold motor, then the testimony may be incorrect due to the reduction of the oil volume during cooling. To accurately determine the level, the motor is fully heated on the XX and then in motion (only provided that the level is not reduced to the critical mark). Full heating makes it possible to warm up not only the coolant, but also the oil itself, the temperature of which increases slower. After the unit are devoured, then 10-15 minutes of pause are withstanding. During this time, fully discharged lubricant has time to drain back into the pallet, and the testimony on the dipstick will allow objective assessment, that is, add or remove excess lubricant with such a need.

So, with the inspection of the oil was determined. It becomes clear that the less viscous it will turn out to be, the easier it will be to run in the frost. If you notice that the flooded lubricant for the winter is not suitable or simply intend to choose the most optimal solution, then we will return to the peculiarities and nuances when choosing. Next, we will try to answer common questions, what oil pour for winter, which is better, 5w30 or 5w40 in winter, etc.

Choosing "Winter" engine oil

Main oil parameters that are in obligatory Considered before buying, you can determine on special markings. In the case of a selection of lubricant for winter, it is necessary to choose a product that will best approach viscosity and temperature indicators. Conditionally "winter" oil in the list of common universal solutions can be considered oil from 0W30 to 10W40.

The 0W30 oil will be the least viscous, that is, even in severe frosts (about -35 or -40) remains fluid and well pumped over the system.
Products with 5W30 index are also well suited for winter, where the decrease in temperature in the region is quite significant. 10W30 is recommended for use in zones where winter is more "soft."
Marking 10W40 means that such an oil is universal, it is well suitable for winter with a slight decrease in temperature (about -5) and for operation in the summer.

It is important to know that the smaller the first digit will be, the fat will be oil after heating the engine and the exit of the unit on operating temperatures. Too liquid oil will mean that lubricating fluid in some cases will refresh the effectiveness of the protection of the conjugate loaded engine parts compared with more viscous analogues. In other words, the oil, the thinner the oil film and the engine is stronger. It turns out, for confident startup and minimal wear at a cold start, it is better to use low-viscosity oils, while after the engine warming up such an oil may not ensure proper degree of protection. Taking into account these features, it is recommended to adhere to the instruction manual and the rules of the Golden Middle. For example, if the manufacturer indicated that for a particular engine, it is possible to use oils both with labeling 5W30 and 10W40, then it is necessary to repel from the degree of possible decrease in temperature in the region.

In other words, if in the winter the temperature is usually not lowered below the mark -5 or -7, then 10W40 may be a suitable option. If the decrease in temperature reaches it up -15 or -20 degrees, then it is wiserfully to stop at 5W30 or 5W40, etc. It is also necessary to take into account the fact that with the onset of heat oil can also be changed to more viscous for improved engine protection. For this reason, some experts recommend pouring a less viscous lubricant in winter and more viscous oil in the summer, that is, to replace the seasons. We add that such a shift is relevant only if the increase and decrease in temperatures in the region greatly exceeds the calculated "universal" oil parameters. This means that if in the winter climatic zone, on average, not lower than -20, and in the summer not higher than +35, then the oil with labeling 5W30 can be used year-round.

Now a few words about manufacturers and oil types. Experts and experienced motorists make the emphasis on the fact that the first work is important to the tolerance of the manufacturer of the engine, and only then should be preferred to some kind of brand. If otherwise, first the necessary marking on temperature and viscosity is selected, then the compliance with all tolerances specified in the manual is taken into account. Only after this is determined by the type of oil (mineral, synthetic or semi-synthetic), and only then you can focus on a specific manufacturer of fuel, unique features of the product, the final cost, etc.

It turns out, it is not so important, you will fool into the engine Liqui Moly., Castrol, Mobil or Xado. The main thing is that the selected product is original, suitable for this type The engine, had a desired viscosity, taking into account seasonality and corresponded to all the tolerances of the manufacturer of the power unit.

Let's summarize

Taking into account the fact that in the free sale there is a large number of types and brands of engine oil, it is recommended not to stop your choice on the cheapest options. Also, the fuel and fuel and lubricants, it is better to purchase in the audited automata and large outlets, which will help reduce the likelihood of purchase. fake goods. We add that with the predicted significant decrease in temperatures in the region, you should not stop your choice on mineral oil. In this case, optimally pour the semi-synthetic.

Finally, I would like to note that if the car during long parking It is in heated boxing or garage, as well as in the process of everyday operation, it usually stands on the street no more than 2-4 hours, then there is no particular need to fill oil with a reduced viscosity in winter.

In this case, it will be enough that will allow you to slow down the speed of the cooling of the engine. Another way to reduce the risks of increased wear and relief of the cold start is the installation, the use of the engine autotroprheating using, etc.

Synthetic or semi-synthetic

Currently, there is a tendency to transition to a more advanced viscosity range. The most significant steps in this direction of the chemists have made regarding the creation of synthetics by adding all new components there. For example, the company "Mobile", which is the first who released synthetic lubricant to the market, works with it and experiments already over thirty years. A huge number of competitors that appeared will not be dreamed and spend huge funds to create a new product with advanced features. But developers producing the synthetics of a highly specialized orientation, for example, for highly loaded diesel engines, there are few.

In addition to the "Pyatoche" - synthetics, there is a similar semi-synthetic. Why not use it? Of course, you can use the liquid mineral water, add thickeners there, the synthetic component with a modern set of additives - and it turns out a completely standard semi-synthetic winter for example. However, it is known that its parameters in any case will be lower compared to the synthetics. After all oil base Plays an extremely important role, asking a physico-chemical base.

A well-known analogy is traced with gasoline. There is a technology in which the handicraft in low-octane gasoline A-80 adds multiple additives and obtain AI-98. But, having worked on such a fuel, the motor will soon require the repair: at least it will be necessary to wash the injector and replace the spark plugs. After all, it is quite understandable that the full gasoline of the highest quality will be obtained only by using relevant technologies.

Viscosity

This characteristic has a primary value for lubricating fluid. This parameter Determines the limiting temperature of oil use. Therefore, what kind of oil is better: 5W30 or 5W40 (in winter or in summer) is determined by this parameter. If the index is low, the lubricant should not be too viscous to implement cold launch Motor starter and pump it over the pump. With high temperature mode, oil, on the contrary, should not have too little viscosity to be able to ensure permanent required level Pressure in the system and formation of a film that protects against friction around the parts.

So, the software are divided into:

Winter. With a small viscosity, the engine will start easily, but the lubricant will not work effectively when high temperatures.

Summer. The cold start will be problematic at temperatures below zero degrees, however, with high viscosity, the motor in warm and hot weather will be securely and consistently.

All-season. When it's cold outside, the oil shows the quality of the winter lubricant, and when hot - summer.

All-season acquires are becoming increasingly distributed, ousting the first two species, as now the need to change the oil every time when changing the time of year. At the same time, they show themselves as more efficient and energy-saving. An example of such a lubricant is 5W40 oil (synthetics).

Other features

Of course, other characteristics are important for oil: detergents, anti-wear, anti-corrosion and antioxidative (for this serve as an additive). However, viscosity has one of the main values. Many modern additives increase price. Therefore, you should always pay attention to this parameter and choose the optimal ratio of lubrication properties and future operating conditions of the engine.

The main prescription that should be guided by choosing is the requirements for the manufacturer vehicle. They are given in the manual. Usually, they are not only containing information about specific properties that should be inherent in the used lubricant, but also proposed concrete oils of oils with recommendations to apply them. Often in the manual there is a shell oil (5W40, 5W30 or another type). At the same time, if your car is not new, and you have a little about its operation, you can easily choose a brand for a motor or transmission.

Standard 1999 SAE

What do these mysterious SAE letters mean? FROM english abbreviation Translated as "Society of Automotive Engineers" (Society of Automobile Engineers). This is an international standard that the viscosity must match. For example, in 1999, the requirements of the standard were as follows.

Oilly determines compliance with a specific season. It is calculated at low speeds from twenty to one hundred degrees and separately with hundred degrees.

Starting properties are revealed through resistance and possibility of obtaining revolutions. Depending on the viscosity and class, are determined at temperatures from ten to thirty-five degrees of frost and high shift speeds (105С-1), that is, the conditions for working in the crankshaft bearings during a cold start.

Pulmonary determines the speed of passing the lubrication to the rubbing details at a cold start, as well as the possible risk of the motor breakage at a cold start due to the grinding of the liners. The indicator is considered at negative temperatures from fifteen to forty degrees and at low shear rates (10c-1). Under these conditions, the lubricant spreads in the pallet to the oil worker when the cold motor starts.

The viscosity at high temperatures reveals the real indicator during operation in the warm season of highly loaded motors. Thus, anti-wear characteristics are visible, losses due to friction and influence on the efficiency of the motor. It is fixed at high shear rates (106c-1). Under these conditions, the crankshaft bearings operate at high temperature and load.

SAE classification

Such is the SAE specification defining in different conditions. Currently there are six winter classes and five year old. Winter is easy to determine by the presence of the letter W ("Winter", which translated from English means "winter"). The higher the viscosity, the more the numeric index will be.

Winter viscosity is indicated by 0W, 5W, 10W, 15W, 20W. 25W.

Summer - 20, 30, 40, 50.

Consider on the example of 5W40 oil.

The characteristics are as follows. Class - viscosity 5W. As it is clear, it can be used in the winter, that is, it is from this indicator that the motor will be turned on in the cold. Thus, in order to understand which oil to fill in the winter, you need to pay attention to this indicator.

The number "40" reveals summer performance, that is, the possibility of engine functioning at high temperatures.

If, as in our example, there is a designation and one, and other classes (that is, the engine oil 5W40, as well as 5W30), this indicates the all-season nature of its use.

How to choose a winter class

Choosing viscosity, first of all are guided by the instructions of the car manufacturer. If there are no such, follow general recommendations.

Picking best oil For winter, you need to consider the conditions under which the vehicle will be operated.

Then problems with launch in winter and negative consequences For a motor (for example, fast wear and jamming at start-up, which can happen in oil starvation conditions) will be able to avoid regardless of whether you are filled with 5W30 or 5W40 for the winter. It is necessary to understand that when the motor is launched, even if it does not occur at a strong frost, and with a plus mark on a thermometer, it is necessary to pump the oil pump on the lubricant system so that the liquid gets into all the rubbing parts and the channels. Until this time, the motor works in conditions of lack of oil. Therefore, friction and wear are significantly enhanced. The greater the lubricant can maintain fluidity in low-temperature mode, the better the protection for the motor will be ensured.

How to choose all-season

Winter properties are reflected from the left side, and the summer - right. Thus, wondering what oil is better - 5W30 or 5W40 - in winter, it is necessary to pay attention only to the indicator on the left, and in this case the same one.

Therefore, you should pay attention to the difference in the summer mode and select the appropriate option depending on the operating conditions of the vehicle.

Viscosity properties

This indicator depends on ensuring the engine launch without heating, free pumping of oil on the system and, as a result, stable lubrication of all driving parts at the highest possible loads and ambient temperature.

Even in a temperate climate, the change in the winter temperature to the largest warm-up is up to a hundred ninety degrees. Therefore, seasonal oils must be changed depending on the time of year. However, when all-season appears (it applies to them, for example, the engine oil 5W40I 5W30) the problem was removed. Thanks to its additives, they are able to show the necessary properties at different temperatures. That is, with a negative meaning, they are similar to winter oils, and with high positive - summer.

Additive

Additives do not significantly increase viscosity at low temperatures, but are greatly raised - with high, when the number of macropolymer molecules is significantly increased. In all-season (to which 5W30 lubricant and 5w40 oil) are characteristics of the time ability to change their viscosity, also relative to the shift rate. With a reduction in speed, it increases, and with an increase - falls.

Most of all, this property is manifested at low temperatures, but at high preserves, which has good consequences for the engine: low viscosity during the cold engine facilitates the descent, and when he is heated - the loss of energy is reduced due to friction, which saves fuel.

Low temperature

The low-temperature characteristic of the oil is opened through the frost temperature when the lubricant ceases to flow. This indicator is realized when the temperature is five to seven degrees below the one at which the fluidity was possible.

Most often, the frost occurs due to the formation in the cooled lubricant of paraffins.

What kind of oil is better: 5w30 or 5w40 (winter)

Based on the foregoing, it is clear that in the cold season, both species show themselves the same. Therefore, for the winter is perfectly suitable and one, and another type of lubricating fluid.

Hello everyone! With the arrival of cold weather, the question becomes relevant how to choose the right engine oil for the engine. On the one hand, it's easy, and on the other - there are some nuances. If you pour the first liquid or thoughtlessly follow the advice of the neighbor - you can harm the motor. Why is that? Let's deal with.

Do I need to change the oil in the winter

At minus temperatures, the engine is most demanding about the quality of the oil. The smaller the viscosity of the lubricant during the cold start - the better. Just B. winter time There is an effect of oil starvation of the engine. What it is?

As you know, when starting, the oil should be filled with the engine. The faster it happens, the better. Because For a while, the motor has to work almost on dry. And when, inside the engine, the metal runs about the metal - there will be nothing good.

Naturally, the thick of the engine oils - the harder it is crushed through all the details. In addition, the load and on the battery. Not in vain, most failures rechargeable batteries It is for the winter. Not only that she itself loses up to 40% of the tank with a strong frost, it is also an additional load in the form of a thick lubricant.

To deal with this, you need to use high-quality winter or all-season lubricant, which will be stable at low temperatures. Therefore, all experts recommend changing the oil before the onset of cold. Even if a few more thousands left to the planned replacement - it will be justified. Especially if under the hood flooded a liquid with a low low-temperature viscosity.

What is the viscosity of the oil

- This is its main characteristic. It defines the maximum permissible temperatures in which the lubricant retains its properties. If the car is operated in a gentle mode, in the warm climate - you can not pay special attention on viscosity. The engine will feel well on any all-season lubricant.

But when the machine is used with extremely low or high temperatures - viscosity needs to pay special attention.

What is viscosity? In fact, this is the ability of oil to create a lubricant between the parts of the engine. Here is a simple dependence:

high viscosity - film thicker;
low viscosity - film thinner.

Basic viscosity requirements:

it should not be too high - the lubricant layer on the details will be too thick and the engine will work heavier - as a result increased flow fuel;
it should not be low - a layer of lubricant will succeed in thin - as a result, it is possible to try the engine parts and its rapid wear.

Therefore, the viscosity of the oil must be optimal. It should be understood that the concept of optimality for each engine will be its own.

Viscosity index

Very interesting and most importantly important parameterdefining the operational characteristics of lubrication. Let's deal with it more.

When the engine works, it is heated, and the viscosity of the oil drops. Those. It is diluted. The dependence of the rate of ignition of oil and is its viscosity index.

From here you can get such a dependence:

the higher the index, the oil loses the thickness slower, and accordingly the engine parts are better than blurred;
the lower the index, the way it is diluted faster. In this case, the lubricant becomes thinner and the engine wear increases.

In a sense, this parameter is a characteristic of lubrication stability. Those. Determines how well it works at extreme temperatures. To select winter oil, it means that the higher the viscosity index, the easier it will take the cold start of the engine.

Unfortunately, manufacturers do not indicate the canister. But, it will not be superfluous to know their average characteristics for different species Oils:

Synthetic - 140-170.
Semi-synthetic – 130-150.
Mineral - 110-135.

As you can see, the mineral car has the lowest. What is not surprising - it's no secret that these lubricants turn into Kissel in the cold.

The highest synthetic indicator, but unfortunately, it can be used on new engines. Motors with large runs are no longer so good tolerant.

SAE motor oil classification

On each canister oil there is a marking of its viscosity on SAE. For example:

10w40;
15w40;
5W30, etc.

What do these figures mean, and how to understand what oil is better to pour into the engine for the winter? Let's deal with.

There are 3 types of lubricant:

Summer.
Winter.
All-season.

It is worth saying that all-season fluids, practically crowded summer and winter oil. Still, it is inconvenient to depend on the weather and change the lubricant when winter or summer comes. Moreover, all-season fluids provide stable work In a wide temperature range.

Justice, it is worth noting that there is:

5 year old grades - 20, 30, 40, 50, 60;
6 Winter - 0W, 5W, 10W, 15W, 20W, 25W.

All-season fluids are marked up as follows: 10W40, 5W30, etc. The cyfra in front of the letter W (WINTER) denotes the lower temperature limit at which the engine lubricant is provided during cold start. The digit after - refers to work at the plus temperatures.

By the way, it is not necessary to believe that these numbers are equal to the extreme temperatures of oil. Everything is more complicated. And soon we will deal with it.

Temperature modes

Let's figure out what the SAE marking is valid, and in which temperature modes can be used. For clarity, take several oil brands:

Mobile super 5W30 - provides engine lubrication at temperatures up to -30 degrees;
LUKOIL GENEZIS POLAR SPECIAL 0W30 - real extreme, fluid is able to withstand the temperature in -40 degrees;
Zick a + 10w30 - universal all-season oilwill provide a good cold start at temperatures up to -25 degrees
Mobil Ultra 10W40 - a liquid with a higher value of high-temperature viscosity is better to use in warm regions;
Castrol GTX 15W40 - for cold winters no longer suitable, the temperature of the cold start to -15 degrees.

Thus, you can easily determine which engine oil for the winter is better.

Oil choice criteria

To determine what kind of oil is pouring into the engine for the winter, you need to take into account several criteria. Among them:

recommendations of the car manufacturer;
mileage cars;
terms of Use;
driving manner;
fluid specifications for ACEA API, as well as tolerances.

In order not to climb into a technical debrist, you can use the selection of oil on the car brand. Let's not stop at this. It is enough to know that on the Internet there is a bunch of services where you can make such a selection.

Motor Motor Main. All aggregates are distinguished by their device and nuances of work. Therefore, first of all, you need to pay attention to the recommendation of the plant - the manufacturer knows best of all, what oil pour into the car. Well, on tolerances, if they are, of course.

For example, the oil recommended for the car is 10W40. If you board 15w40 - the pump will be more difficult to pump fluid in frost. If you change on 0W20 - the motor will start working for wear, because Too fluid lubrication is unable to provide good lubricant Motor.

Mileage and motor status

As you know, when the car moves a mark of 60-70 thousand, it is recommended to move with synthetics to semi-synthetic. This is caused by a decline performance characteristics Motor. Therefore, to determine which oil is better suitable for the motor, it is necessary to take into account his condition.

With the increase in the mileage, the engine changes the requirements for lubricant thickness. And it is recommended to use oil with a higher high-temperature viscosity index. I am expressed by a simple language - you need to pour the liquid thicker than before. In worn engines, too, it is also better not to pour too liquid oil - due to increased gaps, the lubricant will flush with parts.

But, here is a stick about two ends. Too thick lubricant will kill the engine in the frost. Therefore, good engine oil for the winter should be a compromise solution.

If you listen to specialists, they advise:

when the machine is run, more than 100 thousand, all-season use 5W40, and in winter 5W30 and 10W30;
when running more than 250 thousand, all season use 5W50, and specifically for winter - 5W40 and 10W40.

But, again, even when large runs The engine can be in very good condition, as well as being killed after 50 thousand. Therefore, the mileage needs to be considered only together with the general state of the motor.

API standards, ACEA and tolerances

Everything is simple here - to understand what oil is pouring, you need to check the tolerance. If it has a liquid - it means the car it is suitable. If you do not know what a tolerance is, then I will explain. This is a special labeling on the canister, meaning that the oil passed internal certification from the car manufacturer and allowed by them for use in motors.

As for the standards of the API and ACEA, it is also not difficult here. These standards determine the compatibility of the motor with a lubricant. So, by API (American Standard):

Marking "C" - for diesel engine.
Marking "S" - for gasoline engines.
"S \\ C" - universal liquid.

For example, the Marking SL / CI-4 - indicates a universal oil, suitable for both diesel and petrol engines. The second letters on the marking, talk about quality. The closer to the end of the alphabet, the later the specification was adopted - and therefore the liquid is better.

ACEA - European Standard. In it, everything is almost the same. Only letters others:

"A" - gasoline;
"B" - diesel;
"E" - trucks;
"C" - universal class (analog "S \\ C")

Instead of a second letter, a digit is specified to decrypt the specification. What it is more - the better. For example, B5-2002 indicates a liquid for lubricating passenger diesel engines, and the specification is adopted in 2002.

So what kind of oil for the winter is best? Naturally, more fluid. Such a liquid will allow to avoid oil starvation during a cold start and will not deliver problems with strong frosts. At the same time, it is worth considering other criteria described in the article. Still from right choice Oil directly depends on the operation of the car.

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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 guide may be lost, it is not always possible to find this electronic Russified version; therefore, it is important to know each car owner to be able to correctly read marking 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 possesses beautiful washing characteristics And at the same time 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 of lubrication fluid into the most smallest COVS 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 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 that allows this oil In severe frosts - up 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.