We tried to talk about why the quality of motor oil is so important, what happens to it in the bowels of the engine and what factors influence its aging. It remains to talk about how these factors are related to oil change intervals and how often the oils will have to be changed during actual operation.
City and highway
It must be said that changing the oil “by mileage” will almost always be suboptimal. The same mileage on the highway and in city mode is a more than fourfold difference in engine hours and a huge difference in terms of oil degradation. For example, with a standard replacement interval of 15 thousand kilometers, in traffic jams the oil will work for all of 700 hours, and on the highway - even less than 200.
For the quality of oil performance, this more than threefold difference is colossal, because even when operating at low load, the thermal effect on the oil is very high. In modern engines, the situation is aggravated by high temperature control, poor crankcase ventilation and lack of crankcase cooling when the car is stuck in traffic jams, which causes a sharp decrease in its service life.
On the track, the load can also be very different. At speeds up to 100-130 kilometers per hour, for most cars the engine load is below average, the temperatures are low, and the crankcase ventilation works well. With powerful engines, the load is completely minimal, which means the load on the oil is very light.
At higher speeds, as the load on the engine increases, the load on the oil also increases. On small engines with a “short” transmission, the engine and oil may already have a very hard time. On more powerful motors the load will increase more smoothly.
Along with the increase in load on the engine, the operating conditions of the oil also worsen: the temperature of the pistons increases, and the flow of destructive crankcase gases begins to increase. Thus, the optimal operating mode for both the oil and the engine is an average speed of half the maximum and a short idle time after warming up.
When calculating engine hours, it turns out that a typical oil change interval of 15 thousand kilometers in engine hours ranges from 200 to 700, depending on the driving mode. Judging by the operation of the scheduled mileage counters on BMW and the oil change intervals on equipment for which the replacement period is indicated precisely in engine hours, during typical operation it can be kept in the range from 200 to 400 hours for different operating modes, with the exception of constant operation in maximum power mode .
Cases of obvious excess when using standard semi-synthetic oils and hydrocracking-based synthetics are fraught with “complications” for the engine in the form of coking and reduced mobility of the piston rings.
Oddly enough, but 400 engine hours at typical city speeds of 20-25 km/h is exactly the same 8-10 thousand kilometers on one portion of oil. And 400 engine hours at a speed of 80 km/h is already a seemingly unrealistic 32 thousand kilometers, although it is hardly worth striving for such an indicator.
Well, few of us can boast that we drive cars in the extra-urban cycle at a constant speed. So what to do if the runs are mostly urban, and the engine is also forced? For example, some 1.2 TSI? Obviously, the oil needs to be changed more often.
However, the replacement interval depends not only on the driving mode. It is also important what kind of oil is poured into the engine.
Types of motor oils
The choice of oils in stores is very wide, if not huge. Some of them are not far removed from Soviet mineral oils, some look like a spaceship next to a cart in comparison.
First of all, you need to understand one important thesis: any oil consists of a base and a package of additives. The base can be mineral, semi-synthetic and completely synthetic, in many variations.
Semi-synthetics
Examples: Esso Ultron 2000.
Pure mineral oils are almost no longer found; they have been replaced by “semi-synthetics”, which have a much higher additive content. Among such oils there are no long-lived ones; their breakdown products pollute the engine quite heavily, and the additives do not last long, and the viscosity changes greatly over time. But replacement intervals of about 10-15 thousand kilometers are quite within their capabilities. But the conditions are a little more complicated and the number of engine hours is higher, and it would be better to shorten this interval.
Synthetic hydrocracking oils
Examples: Mobil 1 New Life 0w40.
They are often considered almost the same as “semi-synthetics”, but they are noticeably better in real use. A slightly more expensive "base" allows you to make a leap in viscosity stability and the ability to retain the additive package. Most of the “standard” oils from automakers belong to this family. In greenhouse conditions, they allow you to get a range of 30 thousand kilometers from replacement to replacement, but in practice in our conditions it is better to remember that almost all oils in this series are low-ash and are highly dependent on the engine and gasoline.
But with runs of even 15 thousand kilometers before replacement, they turn out to be noticeably better than “mineral water”: they usually have fewer harmful destruction products and better cleaning properties.
But often it’s not just about hydrocracking. These oils are based on both PAO and esters, which are discussed below. A significant feature is that the so-called low-ash Low-SAPS oils on this basis have a significantly reduced additive package to minimize the amount of sulfate ash, phosphorus and sulfur, which may initially extend the life of the catalysts, but clearly reduces the life of the engine.
Synthetic oils based on polyalphaolefins
Examples: Ravenol VPD/VDL 5W40, Liqui Moly Synthoil High Tech 5W-40.
These are hits of yesteryear and the basis of many pure racing oils. Their base is even more expensive, but they have better fluidity, and freezing temperatures can cope with Siberian frosts - without any additives they can be below minus 60 degrees! They hardly burn out, and their decomposition products are as pure as possible and do not form coking on the piston rings.
Unfortunately, these are not products for mass use, and their price is much higher than the price of hydrocracking synthetics, and they also have a less resistant oil film and a worse friction coefficient.
It is more difficult to talk about the replacement interval, but the base of such oil ages very slowly. However, additive packages remain complex and still have their own service life, and mechanical impurities do not disappear. But such oils are really capable of implementing LongLife replacement programs without reducing engine life, maybe even exceeding the standard interval of 400 engine hours.
It should be noted that low-viscosity hydrocracking synthetics often contain a significant amount of PAO, and in real operation the difference between different types of “synthetics” is much less than the difference between pure bases. Low ash oils with this base may also have a weak additive package.
Ester oils
Examples: Motul V300, Xenum WRX, GPX.
Oils based on diesters and polyesters are the next step in evolution. They are even better than PAO oils. Their boiling point is lower, and the friction coefficient is lower. They have a very resistant oil film and excellent cleaning properties of the base itself. But such a base is even more expensive, and many oils whose names contain the word “esters” are in fact not pure esters, but consist of a mixture of hydrocracking products, esters and PAOs.
The resource before replacement for such oils is theoretically noticeably longer, but due to the characteristics of operation and the presence of many oils with a small additive package, many consider such oils to be “sports” and not even capable of working with a standard replacement interval.
In fact, ester oils require less extreme pressure and stabilizing additives, and test results successfully refute the theory of low resource. So you shouldn’t change ester oils every 6 thousand kilometers, unless you want to play it safe when operating them on very forced tuning engines.
Oils of this type are capable of “flushing” even very dirty engines, so after operation with long replacement intervals on oils with a mineral or hydrocracked base, this is what the engine needs.
It’s not news to anyone that there comes a time when it is necessary to change the engine oil. Of course, there are many recommendations regarding this, but the time is determined directly by the car owner himself. Most often, a special service book comes with the car, which indicates the engine oil change interval.
Not all vehicle owners adhere to these recommendations. And frankly, there is nothing fatal about this, since the frequency of engine oil changes is determined during laboratory research, which in practice differs significantly from the operating conditions of the car on the road. The following main indicators are distinguished, which differ significantly from laboratory studies:
- fuel quality level;
- degree of air pollution;
- various climatic indicators.
It is these indicators that determine how quickly the oil needs to be changed.
What is the interval between replacements
A mileage of 15 thousand kilometers is considered the level from which it is necessary to start when determining the engine oil change interval. Deviations from this indicator can be completely different, since everything depends on the car itself. In addition, it is important to pay attention to the above indicators. For example, fuel. We can never say for sure that the gasoline we use is high-quality fuel, even if the manufacturer is very well-known.
Changing the engine oil should not be treated carelessly, since untimely replacement will not only worsen the performance of the car, but can also lead to serious engine damage. This happens for the simple reason that “old” oil loses its ability to reduce friction of parts and ceases to absorb all harmful impurities and combustion products.
Advice! The simplest and easiest way to determine suitability is to analyze the degree of transparency of the oil. The check is carried out visually.
It is necessary to pre-warm the car. This will allow the oil to warm up, since suitability is determined when it is warm. When the warm-up process has come to an end, open the hood and pull out the special dipstick. If it is discovered that the oil in the engine has darkened and has a dark brown color, this may indicate that you should not delay replacing it for a long time, but it is best to do it immediately.
Experienced car owners may have encountered a situation where the oil they had just purchased changed its color to dark. This happens when it contains a large package of detergent additives, which in turn, when in contact with the surfaces of parts, lead to darkening. It is precisely because of this feature that a visual check of the oil for transparency is not entirely relevant.
Attention! This method is only suitable for certain types of oil.
The service book contains a special mark with the recommended engine oil change rate. Most often it represents mileage and engine hours. It should be recalled that this indicator should not be taken literally, because it has already been said that these data were obtained through research that differs from practice. It all depends on the type of car.
Some cars are manufactured for a specific country or territory. Therefore, all calculations regarding various indicators, including engine oil changes, are carried out taking into account the characteristics of this region. When such a car finds itself in a completely different climate and is exposed to completely different conditions, then the replacement interval indicated in the book will not be entirely correct, and sometimes will be completely different.
How does the manufacturer calculate the replacement interval?
In the modern world there are no units that could work forever and under any operating conditions. This is difficult to achieve, and even if it ever happens, all car manufacturers will lose billions in revenue. It is clear that this is not beneficial for many.
If we take this point into account, it is clear that the manufacturer does not clearly define the period for changing the engine oil, since it does not matter to him how long your car will last. All he cares about is that the machine works properly during the specified warranty period. And what happens to the vehicle after the warranty expires is not at all important. Moreover, it is even very beneficial for him if problems occur that prompt the owner to seek service from a specialized service center or, in general, in the event of regular car breakdowns, to decide to purchase a new car.
From the above we can safely conclude that The oil change rate is purely a marketing concept and is not intended to keep your vehicle running smoothly. Sometimes it can be much longer than is actually necessary, because if you specify a short period between replacement procedures, then there is a risk of scaring off a potential buyer with too frequent costs.
Attention! Sometimes the fact that the interval between engine oil changes is very long attracts a significant number of new customers.
How to determine the optimal interval
When the car is used in full accordance with the recommendations, the replacement rate is calculated by kilometers, that is, by mileage. Basically it ranges from 5 to 20 thousand kilometers. This figure is adjusted depending on the age of the car.
The main indicators for determining the interval between replacements are considered to be the operating mode and engine operating time. For example, a vehicle that is used for driving in big cities spends a lot of time in traffic jams, so the mileage does not accumulate, but the engine does not stop working at this moment, which means that the oil continues to perform its main function. Thus, the need to replace it will arise much earlier than the required mileage mark is reached.
Why is it necessary to change the oil?
Experts identify the following situations in which it is necessary to change the oil faster:
- driving a car in constant traffic jams. At this moment, the cooling system is not functioning because the car is running in idling conditions. This indicates oil combustion as overheating occurs;
- the car is used to transport large loads and drive off-road;
- driving with sudden changes in speed limits;
- irregular operation of transport;
- Irregular replacement of the oil filter leads to oil clogging;
- insufficient engine heating, which occurs when driving short distances;
- use of low quality fuel;
- great age of the vehicle;
- vacuum oil change. This type of replacement does not guarantee complete removal of residues that, remaining in the engine, can react with clean oil, which can cause a negative change in its properties.
So what are the consequences of not changing the engine oil in a timely manner? There are two situations here:
It has become clear to many that the longer the life of the car, the shorter the period between oil change procedures should be. This is due to the fact that the combustion process occurs in the engine, and as a result, it is not possible to carry out repair work. The right solution in such a situation would be to frequently replace and check the condition of the engine oil. It is recommended to check the oil level after driving every 100 kilometers. And in this situation, it makes no difference what kind of car it is, a passenger car or a truck.
We will find out how often you need to change the engine oil in the following video:
Motor oil protects the engine from overheating and corrosion, slows down the wear of rubbing parts and neutralizes the effects of harmful products of incomplete combustion of fuel - soot and soot. During the operation of the car, the oil loses its beneficial properties and requires periodic replacement.
How do engine oil characteristics change as it ages?
1. Loss of initial viscosity.
- An increase in viscosity occurs due to the accumulation of soot and carbon deposits in it, and as the light hydrocarbon fractions contained in fresh oil evaporate.
- If the viscosity is less than normal, then fuel or water has entered the oil.
2. Violation of the heat resistance of the oil. Old oil easily overheats, which leads to intensive formation of solid sediment (coke) and accelerates wear of engine parts, causing them to break.
3.Reduced flash point. The penetration of volatile fuel fractions into the oil leads to a decrease in the flash point.
4. Deterioration of the protective and detergent properties of the oil, which prevent wear and corrosion of engine parts. The reason may be the ingress of antifreeze into the oil from the engine cooling system, excessive amounts of additive decomposition products, and particles of dust and dirt.
5. Violation of the strength of the oil film.
6.Decreased base number (oil oxidation).
Important! Any motor oil has an alkaline Total Base Number and a set of additives. The higher the TBN, the longer the oil life.
7.Loss of fluidity. Engine oil curdles due to overheating. The reason is heavy loads on the engine, poor crankcase ventilation, insufficient airflow to the oil cooler, the oil level in the crankcase is below the minimum permissible level, and malfunctions in the cooling system.
Important! The longer the engine oil retains its characteristics, the longer the engine's service life.
How often does the engine oil need to be changed?
The well-established opinion that the engine oil needs to be changed after 10–15 thousand kilometers, but at least once a year, is partly correct. When determining the actual period of time before an oil change, it is necessary to take into account:
1. Brand and company of the manufacturer of the oil poured into the engine.
What kind of motor oil is there:
- Synthetic oils.
Advantages:
Heat resistance. Exceeding the temperature of the oil by 10⁰C during poor operation of the cooling system for half an hour causes the formation of coke and soot, polymerization, and also destroys the additives added to the oil. Synthetic oils practically do not lose viscosity when heated. At the same time, synthetics retain their detergent and dispersant, antioxidant and anti-corrosion properties until the next oil change. The disadvantage is the high cost compared to other motor oils.
- Semi-synthetic.
They are inferior to synthetic oils, since they are a mixture of high quality base oil (50 - 70%) and mineral oil (30 - 50%) with the addition of various additives. For example, if mineral oil loses fluidity in winter at a temperature of -35⁰C, then semi-synthetic oil is poured into the engine of a car operating in less severe conditions - at a temperature of no more than minus 20⁰C. Semi-synthetics are popular among car enthusiasts, since the technical characteristics, although worse than those of synthetic oils, are several times less expensive, depending on the brand.
- Synthetic oils based on PAO.
PAO is a fully synthetic oil produced by the synthesis of polyalphaolefins. Advantages: resistance to oxidation under temperature overloads and improved anti-friction properties that reduce fuel consumption have made this oil popular among race car drivers and fans of fast and aggressive driving.
- Hydrocracking oils.
If PAO synthetic oil is made from gas, then HC synthetic oil is obtained from heavy petroleum products. Oil produced using hydrocracking technology is 20–30% cheaper than PAO, and is practically not inferior in any technical characteristics, except thermal stability. PAO synthetics have twice as much resistance to temperature overloads, and the oil change interval is longer.
- Ester oils.
Made on the basis of esters. The main advantage is that during a cold engine start, dry friction of engine parts is eliminated due to the presence of a permanent oil film that can withstand a load of 22 thousand kg/cm². For comparison, the oil film of PAO synthetics can withstand an impact load of 6500 kg/cm². The lack of esters means that this is one of the most expensive types of oil.
- Polyglycolic oils.
It is 70% a mixture of PAO and esters, to which PAG polyester (polyalkylene glycol) is added. The “cleanest” oil that has excellent performance when starting the engine in winter cold. The viscosity of this oil is 180 units. It does not lose its properties for a long time and therefore it is called “oil for the lazy,” since PAG oil has the longest service life.
2. Operating conditions. The rate of oil aging depends on the nature of the trips. Severe operating conditions mean driving a car in urban conditions in a ragged rhythm, when the trip alternates with long periods of standing in traffic jams and high-speed driving in free areas. But traveling on long-distance highways at top speeds also negatively affects the life of the oil.
3. Features of your own car. Most automobile manufacturers do not advise changing the brand of oil recommended for a given vehicle. Switching to another oil can lead to unpredictable consequences. If the car owner decides to take such a step, then when choosing an oil, you need to consult with specialists.
4. Money factor. The table will help you compare motor oils by price (approximate, of course).
How to change engine oil?
The oil is changed at dealer auto centers or service stations. For those who want to do this themselves, but do not have the skill, it is recommended to watch the video.
- Vehicles under warranty are filled with oil of the brand and within the time limits specified in the service book.
- The usual oil change interval is 10 thousand km. Taking into account operating conditions, driving style, and vehicle characteristics, the replacement frequency can be reduced to 5–8 thousand km or increased to 15,000 km.
- The use of oil with an extended service life of up to 20–30 thousand km requires approval from the manufacturer.
- Along with changing the oil, the filter is also changed. If the engine is after a major overhaul, then after 3 thousand km only the oil filter is changed.
Bottom line
It is better to entrust the oil change to a professional - a mistake can cost you the breakdown of the entire engine. If it is not possible to use the service, try to choose the oil as accurately as possible and approach the replacement procedure as responsibly as possible.
Motors consume not only gasoline, but also oil. And I really want to save money on it. Will last year's oil be able to work for another season?
Car manufacturers recommend changing the engine oil every 15 thousand kilometers. Standard operating conditions allow you to drive on one fill for a year. But operating a machine in a metropolis differs markedly from standard conditions and involves increased loads on all technical components. Therefore, oil change times are reduced.
On the one hand, in a large city the mileage is small, only 30-40 kilometers on weekdays. But if, when the roads are clear, a car covers them in 20-30 minutes, then during rush hour the journey stretches for a total of 3-4 hours to work and back. Traffic congestion forces you to push in first gear along congested streets, repeating the start and stop cycles an infinite number of times. And all this time the engine burns fuel, spinning up to 3000 rpm and freezing again. Naturally, the temperature rises, the air conditioner takes a considerable part of the energy to operate the compressor, and the engine overheats.
It’s even worse when, in order to save money, the owner of the car is used to filling in cheap AI-92 instead of AI-95 gasoline, which is reflected in an increased number of detonations. Then the temperature regime of the engine goes beyond the established limits and another impossible task falls on the oil: cooling local overheating zones.
In general, traveling in a traffic jam refers to extreme operating conditions and not only reduces the service life of the mechanics, but also affects the service life of the oil. And in order to determine the service life of the oil, it is necessary to calculate it not in mileage, but in engine hours, as on special equipment.
It's easy to do. Typically, in passenger cars, 200-250 engine hours are generated over 15 thousand kilometers. This is about a year of operation at an average speed of 60 km/h, after which it is prescribed to go for scheduled maintenance.
But in Moscow, the average speed is much lower and fluctuates around 30-40 km/h. Cars sit longer in traffic jams, but their engines still do useful work. Therefore, an oil life of 200-250 engine hours is produced in Moscow over a period of 7000-8750 kilometers. And this is almost two times less mileage than the interval between maintenance prescribed by the manufacturers.As a result, the vast majority of cars in Moscow lack good lubrication. And this is dangerous for equipment, since modern synthetic oil is very afraid of overheating. Its additives change properties when exposed to temperature and stop working properly. The oil turns black and its viscosity drops. If you pull out the dipstick and look at the edge of the measuring scale, burnt oil will drip like water. Then it’s a direct route to the store for a new canister.
In general, it is better not to skimp on oil and replace it at least before the summer season. If a car under warranty is pushed around in traffic jams every day and covers over 8 thousand kilometers a year, then it is better to go to specialized technical stations to change the oil twice a year. In this case, you only need to fill in the oil that is recommended by the manufacturer for a specific model. It is selected based on the temperature conditions of the engine.
There are more and more motorists on the roads - this is a consequence of both the growth of the population in general and the improvement in living standards. Having a car simply becomes an obligatory part of the social image of a prestigious person, and not just functionally used as a means of transportation. But not everyone knows how to take care of their four-wheeled friends, and as a result, they begin to ask questions.
This approach is reasonable, because a car service is not always at hand, but your own hands can solve many problems. One of the questions is: how often do you change the engine oil? Actually, this will be discussed below.
Basic FAQ
The question of frequency, in fact, often fades into the background. Especially when the conversation turns to choice. So now several small subtopics of interest to car enthusiasts will be revealed. Naturally, one way or another, this will relate to the question of how often to change the engine oil. You will also get a straight answer. But this topic is generally quite complex, since you need to know many variables to solve it. That's why everything is so individual.
Where to buy motor oil?
If you look at the relevant stores, you will see that the shelves are literally filled with a variety of oils and other similar compounds. The choice is practically unlimited, since, in addition to branded lines, it is quite possible to find a composition “from the manufacturer”.
Before choosing one option or another, you need to know one particularly important thing - any oil, no matter what it is, always consists of a certain base, as well as additives.
How are oils classified?
The division occurs according to the thesis already stated - that is, taking into account the basis of the product. There are three main types - mineral, synthetic and semi-synthetic bases.
Using them as a foundation, they create all those products that are displayed in automobile supermarkets. Oddly enough, you will have to choose from the last two types. as such they practically never occur.
You can purchase either semi-synthetics or synthetics, where the composition is based on a variety of artificial compounds. The first is usually cheaper and weaker in quality, but is quite suitable for most cars. The second, in turn, is often more expensive - but the feasibility of its use is a big question.
How often do you change engine oil?
Any driver will answer this question exhaustively - the more often, the better. True, here you encounter certain difficulties, since this process is quite long, and the product itself costs a certain amount. So usually the technical characteristics of the machine contain a recommendation from the manufacturer.
Actually, there is simply no clear answer to this question - it can be any figure from 5 to 50 thousand kilometers inclusive. True, a whole chain of factors plays a role here, which will be discussed below.
What aspects need to be considered?
As you already understand, any manufacturer technologically calculates the recommended service interval. This is what you should focus on first.
Also, do not forget about those points that can reduce the intervals between regular maintenance. These are usually external factors. They mainly affect the service life of the motor itself - so pay special attention to this.
Based on all of the above, you need to calculate an individual replacement schedule. But this will still be something rather arbitrary, since in addition to time and mileage there are other factors, and you are simply not able to take everything into account until this happens.
This point is the most important in the question raised. Indeed, is it possible to find out how often to change the oil in an engine (2nd generation Ford Focus, for example)? Yes, such a possibility exists. To do this, you just need to look at a column such as the service interval in the technical documents for the car. There is nothing complicated about it.
But you should know that these are just general recommendations. So the average conditions used in the assessment may be completely incomparable to those in which you live. This is quite normal, and you just need to take into account everything that happens to the car and inside it.
How does the manufacturer calculate the service interval?
Cars don't last forever - it's simply not profitable for manufacturers. Accordingly, a logical conclusion can be drawn from this - any recommended timing is by no means a concern for the engine of your car. At least when it comes to the long term.
There is nothing particularly surprising in this, since the manufacturer is only interested in one thing - that the machine lasts the entire warranty period and cannot be sued. There is even some benefit here, especially if the mechanism breaks down shortly after the warranty expires.
In addition, there is also a marketing point - the longer the interval indicated in the documents, the more attractive the car will be for the buyer.
Indeed, how often to change the engine oil is just another argument that can be used to convince you to make a completely unjustified purchase.
There is no specific advice on this matter. Whether you trust the manufacturer is entirely your business. But in the CIS, the justification and feasibility of such an approach may be somewhat different. This should also be remembered.
Factors affecting the replacement interval
It's worth starting with the main reasons. First of all, this is the season, as well as the operating mode of the machine. That is, in general, it all depends on when and how you use the car. Here we are no longer talking about just a reasonable grain, but rather about a reasoned conclusion.
In addition, it is worth considering the quality of the gasoline used - this may be a key point. Also pay attention to other consumables. Actually, the same oil can greatly affect how often it will have to be changed.
There are also internal problems with the car, which can greatly affect the resulting figure.
Basically, these are various leaks or waste. In the first case, you should contact a professional service as soon as possible, since some part of the oil line is damaged, and this can lead to the worst consequences. You can figure out the second one yourself, but a lot depends on the reasons that led to such consequences.
Manufacturers also often use such a magic phrase as “severe operating conditions,” but this needs to be discussed separately. In general, this greatly affects the service interval. True, descriptions of such processes are quite labor-intensive.
What is severe operating conditions?
We can assume that you imagined when you heard this phrase. So, forget it right away - here you will be wrong. So, the main points of conditions intolerable to a car:
- Irregular use - cars that are driven every day perform best. Otherwise, this leads to the need for frequent oil changes, as well as other problems in the engine mechanism.
- Regular trips over short distances - the point here is to travel with an unheated engine. Actually, in most cases, especially in cities, the engine simply never warms up to normal, at least when driving along the daily route.
- Driving according to the “start-stop” principle - this usually happens at any traffic light or intersection. At the moment of start, the oil heats up especially strongly, and therefore is consumed.
- Whether the car is loaded or using a trailer, simply putting too much stress on the engine affects the oil itself.
- Air pollution - any dust and dirt that enters the engine through the air filter can have a certain impact on its performance.
- Low quality gasoline - nothing further needs to be explained at this point.
- Idling.
Additional factors
There are also certain difficulties that cannot be ignored. The main one, on which the emphasis is placed, is vacuum. Here you need to know that, despite all its advantages, such as a faster process by an order of magnitude, and clean hands in the end, this method also has its own disadvantages.
Firstly, in this way it is impossible to drain every drop of oil - and in the traditional version this is exactly what happens. In addition, sediment remains at the bottom of the pan, which cannot be removed using vacuum suction.
In general, if you use this method, remember a few tips - alternate it with the usual one. Also, do not forget that you will need to carry out maintenance a little earlier after such a replacement - just for the sake of engine safety.
Domestic cars
And yet, how often do you change the oil in the engine of a 2107 VAZ? Specific questions require specific answers. This is the only thing that worries most car enthusiasts. So, you will have to focus on numbers from 10 to 15 thousand kilometers. In the same way, you can answer the question of how often to change the oil in a VAZ-2109 engine.
For some other domestic cars the numbers may be slightly different. But in general, for example, the same Ladas are not very different from VAZs. For example, on a domestic car, how often should you change the engine oil (Kalina is no exception)? The answer will still be the same. Ten, maybe fifteen thousand kilometers. As you can see, there is nothing difficult about orientation. Also, due to the popularity of the model, you can often hear the question: how often do you change the engine oil on a Priora? Priora model 2170 is repaired according to the same principle. The numbers don't change much.
In addition, there are more modern models of Russian cars. We need to talk about them in a little more detail.
For example, how often do you change the oil in a VAZ-2114 engine? According to the factory specifications, we are talking about fifteen thousand kilometers. But reviews from car enthusiasts, rather, hint at a slightly lower figure - ten. And even with regular maintenance to avoid related problems.
If you are interested in how often to change the oil in a VAZ-2110 engine, the answer will not change. These are still the same ten thousand kilometers. In some cases, fifteen.
Popular foreign cars
Among European small cars intended for the city, several brands are especially popular among Russians. Therefore, the relevant questions are: how often do you change the oil in a 2nd generation Ford Focus engine, for example? The answer lies in the technical documentation - 20 thousand km. But, given the characteristics of environmental conditions, motorists recommend slightly lower numbers. Usually opinions agree on 15 thousand, but the car can easily go all 18.
Many people are also interested in how often to change the oil in a Renault Logan engine. The interest is quite justified, given the prevalence of the model. Again, the manufacturer indicates 20 thousand km. But Russian roads and difficult operating conditions reduce the figure by half.
