Which gasoline is better to pour: 92 or 95

Which gasoline is better to refuel with, 92 or 95?

Many car enthusiasts are interested in the question - which gasoline is better to refuel, 92 or 95, and this is asked not only by beginners, but also by experienced drivers. In the article we will look at what to do in case of refueling with low-quality gasoline, why it is necessary to fill the car with fuel that matches technical standards.

Which gasoline is better - AI-92 or AI-95?

Some motorists are confident and claim that the higher the octane number of gasoline fuel, the better it is, and such fuel is better for the engine. On the one hand, there is some truth in this statement - on high-octane gasoline:

the motor runs smoother;
practically no detonation;
dynamics are improved and fuel consumption is reduced.

To have an idea about gasoline, you should know that gasoline fuel is obtained by distilling oil. Octane number (ON), in simple terms, is the detonation resistance of gasoline, and the direct distillation method produces a maximum octane number of 93; a higher octane number is obtained only through special additives.

High-quality additives really improve the fuel purity, but not all gas stations meet AI-95 gasoline standards, and it is difficult to say what is sometimes added to it.

Another thing you should know is that each engine is designed to work with a certain type of fuel, and if the vehicle’s performance characteristics indicate that it should run on 92-octane gasoline, another brand of fuel should not be filled in, and the question “which is best to fill with gasoline” is resolved by itself .

The best fuel for a car is the one that is supposed to be poured into the fuel tank; other options should not be considered here.

The volume of the combustion chamber in an internal combustion engine is designed for a certain octane number of gasoline; using a different brand of fuel can lead to failure of parts of the power unit.

If you fill in 95 gasoline instead of 92

In theory, AI-95 fuel grade should not be used instead of AI-92, but this will not cause much harm to the engine. If the difference in octane number is more significant, then there may not be the best consequences for the engine.

For example, if you run an engine designed for AI-80 fuel on 92-octane gasoline for a long enough time, the exhaust valves may burn out over time.

Using 95-grade gasoline instead of 92-grade gasoline in practice does not lead to undesirable consequences; on the contrary, on high-octane fuel the internal combustion engine only works cleaner, and also:

dynamics increases;
fuel consumption is reduced.

Again, a reservation should be made - all this is true only when using high-quality gasoline with normal, “non-natural” additives.

If you fill in 92nd gasoline instead of 95th

If the car must run on 95-octane gasoline, it is extremely undesirable to refuel the car with fuel with a lower octane rating; here the consequences for the internal combustion engine can be much worse. And the result of refueling AI-92 instead of AI-95 is as follows:

engine detonation appears;
dynamics disappear, the engine pulls worse;
fuel consumption increases;
The engine is running rough.

If the use of higher octane gasoline instead of low octane gasoline is somehow allowed, then on the contrary this should not be done. The 92nd instead of the 95th significantly reduces the life of the internal combustion engine, and the engine in this case may require major repairs much earlier than expected. In any case, it is better to use higher octane gasoline; this will cause less harm to the engine.

Use of low-quality fuel

At Russian gas stations, fuel does not always meet quality requirements, and low-quality gasoline harms the car. If you fill up your car with bad gasoline, it is not difficult to understand; low-quality fuel is determined by the following signs:

the car stopped driving normally, as if someone was holding it from behind;
“fingers ringing” in the engine - when you press the gas pedal sharply, detonation appears;
the engine runs rough.

As a result of using bad gasoline, soot forms in the combustion chambers and on the piston heads of the internal combustion engine, and the engine can emit a lot of black smoke. What to do when refueling your car with bad gasoline:

drive at low speed to the nearest auto repair shop;
drain all fuel from the gas tank;
flush the fuel system;
change spark plugs and fuel filters;
Carry out diagnostics of injectors (carburetor) depending on the engine type.

How to avoid refueling with low-quality fuel

No one is safe from refueling with low-quality gasoline, but if you follow some rules, you can protect yourself as much as possible from bad fuel.

You should only refuel your car at proven gas stations, for example, at Lukoil or Transneft; here, in 99 cases out of 100, they will fill your gas tank with normal gasoline.

You should not be fooled by the suspiciously low price of fuel; very often the savings come at a cost.

If you refuel your car often, pay attention to the appearance of the gas station. The gas station should be of a normal appearance, with good equipment, with all the necessary information for customers. In general, you should refuel in large populated areas, at large gas stations. Gas stations of an unknown type should arouse suspicion, and it is better to avoid them.

Gasoline additives

Additives that increase the octane number were previously based on the use of tetraethyl lead; in Soviet times, concepts such as leaded and unleaded gasoline were very popular.

Nowadays, the use of a dangerous additive that pollutes the atmosphere, including leaded gasoline, is prohibited in many countries, however, cunning entrepreneurs often use tetraethyl lead in the pursuit of profit.

Nowadays it is almost impossible to find leaded gasoline; in Europe its use has been prohibited since January 1, 2000.

Despite the ban, there are dealers who use tetraethyl lead, and, as a rule, their gasoline is suspiciously cheap.

A harmful additive not only pollutes the atmosphere, it also negatively affects the performance of the car as a whole. First of all, the catalyst gets clogged here, and replacing it is expensive for the car owner.

The additives that increase the octane number in modern gasoline are based on ethanol. The substance is ordinary ethyl alcohol, and it is no longer as toxic as tetraethyl lead. Modern 95 gasoline is a fuel to which 10% ethanol has been added; the fuel is approved for use in all countries, including Europe.

Using 98 gasoline

AI-98 gasoline fuel is mainly used for highly accelerated engines that are installed in luxury premium cars and sports cars. It is not recommended to simply fill up with such gasoline, especially since the cost of AI-98 is quite high. But still, in some cases, you should refuel with 98-octane gasoline, for example, to raise the octane number to normal.

If you fill up with bad gasoline and the car stops driving normally, the AI-98 will help out - adding 5-10 liters of fuel to the gas tank will allow the engine to “breathe” normally. But if you previously filled in frankly “scorched” fuel, 98 will not help, and flushing the fuel tank cannot be avoided.

Source: https://avtobrands.ru/kakim-benzinom-luchshe-zapravlyatsya-92-ili-95/

Which gasoline is better - 92 or 95? – magazine Behind the Wheel

Which gasoline is better - low octane or high octane?

Personally, I have never had such a question. And not at all because in the old days there was no choice.

Then people only argued about how best to switch from 93rd to 76th, which some good people sold to other good people at half the price, or even cheaper.

Unfortunately, when you can fill the tank for a third or even a quarter of the state price, then all technical arguments cowardly go aside.

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There were many solutions.

Some then installed an additional gasket in the cylinder head, others changed the spring stiffness of the distributor, others simply switched to late ignition, and the laziest did not change anything at all.

But no one had any doubts that the Zhiguli still drives much better on its native 93-octane gasoline than on low-octane swill. However, what won’t you do to save significant money?

It is curious that today there are a lot of different gasolines, but the debate has not stopped at all. The difference in the declared octane numbers between 92 and 95 is not that big, but the topic does not die.

There are two reasons for praising lower octane: the same desire to save money, as well as the fear of running into the shoddy quality of high-octane fuel.

The latter circumstance was once generated by rumors that the 95th was supposedly being “bodied” more, but the 92nd was being done “correctly”. Well, the first one, regarding cost, is still alive today - they say, we are not so rich... and so on.

Generally speaking, in Europe there is no longer a 92nd. But we are not Europe. And any search site still explodes with hundreds of publications in response to numbers 92 or 95. Well, I’ll express my personal opinion for the hundredth time. And I apologize to those who don't like it.

About the price. I specifically present two photos from the gas station - one modern, the other six years ago. The prices for a liter of 92 and 95 were, respectively, 33–70 and 36–70, and previously - 24–70 and 26–70.

This is the gas station as it was 6 years ago. The difference in price between 92 and 95 is 2 rubles.

The absolute difference in the price of a liter was 2 rubles, now it is 3 (however, somewhere a little higher). And how much can you save on refueling with such a delta? One hundred rubles? Given the current cost of the tank, this seems like a minor cause for concern to me.

And for those who are going to prove that even a hundred rubles is money, I sincerely advise you to change your driving style. I promise you a much more significant financial gain - I’ve written about this more than once.

The same car can “eat” 7 liters per hundred, and all 15.

And this is a modern gas station. The difference in prices is 3 rubles.

Now for the technique. Any engine is calibrated for a certain type of gasoline - this is a fact. And if the manufacturer wrote: they say, fill in only 95th, and - not a step to the side, then you need to listen to him. Even if you keep a three-finger combination in your pocket.

The car will drive worse on low-octane gasoline (how could it be otherwise?), but that’s not the point. Imagine a bad case: there is a problem with the engine, and you come for service. And there, the funny guys will first take a fuel sample from the tank.

And if at least something “from the wrong opera” is discovered, then you can forget about any guarantees. You need it?

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Of course, this is an extreme case. Most modern engines designed for 95-grade gasoline will swallow 92-grade gasoline without any problems.

But I still urge you to fill only with the gasoline that is indicated in the instructions for your car. If the spread is indicated, that’s a different matter: choose for yourself.

But if it is not there, then do not conduct laboratory work on your own machine. Have pity on her. And myself at the same time.

By the way, all automakers have recently gone a little crazy, unanimously starting a campaign for 98-octane gasoline. They say, do not fill with low-octane 95, no matter what the instructions say.

Only 98th in all cars without exception! I have already spoken out about this, more than once, but the trend is clear: you give high octane! Therefore, I repeat once again: when choosing between 92 and 95, I am always in favor of 95.

However, there are funny things in the Fatherland. An interesting observation was recently made by my former colleague Vadim Kryuchkov. He was interested in the question of what kind of fuel should be poured into VAZ cars - this is where interesting nuances became clear. It turned out that VAZ and Renault-Nissan do not have a unified approach: the same engine installed on different models is prescribed different types of fuel.

I quote Vadim. “For Vesta and XRAY with a VAZ-21129 engine, A-92 is allowed, and for similar engines on Priora, Kalina and Grant under the VAZ-21127 symbol, only A-95 is prescribed. Or, let’s say, the eight-valve VAZ-11189 for Largus officially swallows the 92nd, but give the same Kalina VAZ-11186 engine only the 95th.

“And here’s another: “Why does the 16-valve K4M engine developed by the alliance under the hood of the Lada Largus require an A-95, but in Almere, Logan and Sandero it can work on an A-91? Moreover, Renault even allows short-term operation on gasoline with an octane rating of 87 according to the research method.

There is no such grade in Russia, but low-quality 92 may get into the tank, which the engine will somehow cope with.”

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In short, the engineers did not agree with each other which saint they should collectively believe in. Previously, at the same VAZ, a certain unity of views reigned: they say, 95 - that’s all. The arguments are simple: at the same time, we promise you environmental friendliness plus efficiency plus acceleration, etc.

There was also a backup argument: this is the so-called technological reserve laid down by the designer for all sorts of “ifs”! In other words, if somewhere, “not in our area,” as Comrade Saakhov said, they still fill you with something worse than 95, then nothing will happen to your engine.

But as soon as we resolve the 92nd, we will thereby take responsibility for some 87th... And who needs that?

Today, it seems to me, it makes no sense to develop engines for the 92nd. If only because, as I already said, in Europe such numbers are no longer in use. The lower modern limit is 95. As for modern and previously released cars, I will repeat once again: I am for the 95th.

Even if the automaker allows for variations in octane.

Which gasoline is better - 92 or 95?

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Source: https://www.zr.ru/content/articles/905282-kakoj-benzin-luchshe-92-ili-95/

Which gasoline is better to fill in - AI-92 or 95?

Which gasoline to prefer: 92 or 95 is a traditional topic of discussion among car enthusiasts. And although the operating instructions for each car indicate the permissible class of gasoline, debates about the advantages of one or another brand of fuel do not subside. Perhaps also because in modern cars the manufacturer indicates a threshold or range of octane numbers.

Besides price, what are the main differences between 92 gasoline and 95 gasoline? What kind of gasoline should be poured at a gas station if the use of fuel, for example, with an octane number of at least 92 is allowed? Is it possible to mix brands of gasoline and fill in 92nd if the manufacturer recommends 95th? All these questions are constantly of interest to the car enthusiast community.

You may also be interested in our material on which oil is best to pour into a car engine.

Quality, octane number and other characteristics and properties of gasoline

The main characteristics of the gasoline brands used in Russia are given in the table above. The sacred series of numbers 92, 95, 98 denotes what in technology is usually called octane numbers. To put it simply, these are quantitative indicators of the fuel’s resistance to detonation (self-ignition and subsequent explosion) during compression.

The higher the octane number, the higher the detonation threshold, which means the constant use of 92-grade gasoline in engines designed for 95-grade gasoline can lead to undesirable consequences from detonation phenomena (especially when operating at high speeds).

Octane number is the most important characteristic of a gasoline brand for a consumer. But the properties of the fuel are not limited to this and are largely determined by the technology for producing gasoline during the refining of petroleum products.

The fact is that gasoline obtained after direct distillation of oil has a low octane number - no more than 60. Further, various methods can be used to increase the octane number in the technological chain. In Russia, the most common technology is catalytic cracking (another name is hydrocracking), which brings the octane number to 85.

The next stage of increasing the octane number is the use of additives:

The first type of additives – metal-containing additives based on lead compounds – was widely used in the last century in the USSR (the final product was leaded gasoline). Such additives worked very effectively, but caused harmful emissions into the environment and for this reason are completely prohibited for use.
Additives containing manganese or iron compounds (ferrocenes) have proven to be less hazardous to the environment. But their use is also limited: manganese compounds decompose in light (the consequence is deterioration of resistance to detonation) and ferrocenes (a source of oxides) are one of the causes of soot formation. In addition, ferrocenes contribute to the formation of resins that pollute the engine.
Taking into account environmental requirements, additives based on ethers and alcohols are considered the most effective. However, such compounds have a relatively low octane number - 120 (for comparison, in metal-containing additives this figure reaches 280). Therefore, the specific content of such additives in gasoline should be high – up to 15%. The main disadvantage of ether and alcohol additives is their high volatility, which means that the fuel is not intended for long-term storage and must be “fresh”.

Understanding the basics of the technological scheme for gasoline production also leads to an understanding of the reasons for the appearance of low-quality fuels on sale. Unfortunately, the formal requirements for gasoline quality in Russia do not fully coincide with the requirements of European standards, and the inscriptions at some Euro 5 gas stations are nothing more than advertising.

Accordingly, a set of additives can ensure compliance with the requirements regulating certain parameters of gasoline, but the quality of the fuel will be unacceptable (as experts from the magazine “Behind the Wheel” once showed with a specific example). Therefore, the question of the quality of fuel at a particular gas station may turn out to be much more important than the dilemma of the 92nd or 95th.

Is it possible to change the brand of gasoline and what will happen if you mix 92 and 95?

And yet, which gasoline is better: 92 or 95? It is unlikely that such a formulation of the question can be considered correct. Provided that the gasoline is of high quality, the brand to which the engine control parameters are set is good.

After all, if, for example, the octane number of gasoline is significantly lower than recommended, then the ignition process in the combustion chamber will occur earlier than expected, when the intake valves are not yet closed.

Not only will part of the thermal energy (and therefore the power developed by the engine) be wasted, but the detonation processes themselves will add problems: unstable engine operation, accelerated wear of rubbing parts, increased carbon formation.

Almost the same problems will arise in the opposite situation, only now ignition will occur with a delay, causing the same negative consequences.

It should be noted that modern cars provide for adjustment of engine operating parameters to change the octane number in a certain range. The Electronic Engine Control Unit (ECU) continuously monitors:

gasoline/air ratio in the air-fuel mixture;
fuel injection timing;
moment of ignition of the fuel mixture;
detonation;
engine speed,

and, if necessary, adjusts the parameters and operating mode of the unit. But the possibilities of the ECU are not limitless, and if the difference in octane number is significant (for example, 80 gasoline is poured instead of 95), the electronics cannot cope with it.

Experts also do not recommend pouring 92-octane gasoline into engines with a small combustion chamber volume (and also turbocharged ones).

The fact is that an increase in power (or rather specific power) in modern engines is achieved by increasing the compression ratio and when this indicator is more than 10.

5 (and often the compression ratio reaches 12), the requirements for the anti-knock properties of the fuel increase - in other words, for the octane number.

On the contrary, if the compression ratio is less than 10.5, then the engine operating parameters are configured to use 92-grade gasoline, and when using 95-grade gasoline instead, some loss of power is possible due to later ignition of the fuel mixture.

Another important argument for using the brand of gasoline recommended by the manufacturer in a new car is maintaining the right to warranty repairs during the appropriate period.

A formal refusal to warrant engine repair may rightfully follow the results of a fuel analysis if it turns out that the brand does not correspond to that specified by the car manufacturer in the operating instructions.

And then a savings of three to four thousand rubles (average value per 15,000 km per year) can result in much greater losses of money, time and nerves.

Is it possible and in what proportion to mix these two brands? Is it possible to fill a tank with remaining gasoline of one brand of another brand? It would seem that such mixing would create fuel with certain average properties. Actually this is not true.

In the case where the car is designed to use exclusively 95 gasoline, and if necessary, is filled with 92 gasoline:

if there is some loss of power, but the engine runs stably at low and medium speeds without any extraneous sounds, there is no reason to worry until the next refueling. It is only necessary to observe a quiet driving mode;
When the engine is running, a loud clicking sound is heard, very similar to the knocking of valves - a clear consequence of detonation processes, which, with prolonged use of such gasoline, can lead to negative results. In this case, it is advisable to change the fuel as soon as possible (tip: how to drain gasoline from the tank).

Long-term use of 95 gasoline in cars designed for 92 gasoline with a compression ratio of less than 10.5 can also result in a loss of engine power.

Video: comparison of car characteristics on 95 and 92 gasoline

Source: https://unit-car.com/poleznie-soveti/254-kakoy-benzin-luchshe.html

Which gasoline is better to pour: 92 or 95

Owners of cars with gasoline engines are often interested in which gasoline is better when choosing between brands of fuel sold at gas stations.

This formulation of the question is by no means rhetorical, but has a completely practical meaning.

This is due to the settings of the power unit, the stable and predictable operation of all related systems, as well as the financial question: pay more or not pay? Let's get to the heart of the matter.

Theoretical part

The numbers indicated when labeling fuel indicate very specific indicators and indicate the octane number.

The higher it is, the more the fuel can resist self-ignition during the compression stroke in the engine cylinders. This helps reduce the likelihood of detonation in a running engine.

Detonations mean accelerated uncontrolled combustion of the fuel mixture, actually an explosion.

Gasoline selection

You need to know that the octane number is used only for gasoline, and for diesel grades of fuel the “cetane number” is involved in the characteristics.

Gasoline distributed through the retail network may now have a maximum octane rating of A 98. But to find out whether it is better to pour 92 or 95 into the tank of a particular car, you will need to get advice from the manufacturer.

Factory fuel recommendations

Car manufacturers can recommend both a specific type of fuel and a range of acceptable values. You can find out this parameter in the instructions that come with new cars or get information on the manufacturer’s website. Often, for quick access to such data, the exact permitted figures for gasoline are indicated on the inside of the gas tank cap.

Injection engines installed in cars are designed for a specific brand of fuel. Here the recommendations from the manufacturer will be unambiguous. By fulfilling this requirement, the driver will protect the engine, fuel system, catalyst and extend its service life of the entire car.

Markings on the fuel tank cap

Fuel modifications and manipulations

Additives can be used to change fuel parameters. With their help, it is possible to artificially increase the octane number. Traditionally, in our country all additives (legal and not so legal) added to technical fluids are called additives. Counterfeit products (often useless and sometimes harmful) have discredited the term.

Source: http://ktonaavto.ru/avto-faq/raznoe/kakoj-benzin-luchshe-lit-92-ili-95.html

What kind of gasoline should I fill in: 92 or 95?

To understand which gasoline is better to fill in our car: 92 or 95 and whether it is possible to fill 92 gasoline instead of 95 and vice versa, let's determine how exactly the octane number of gasoline affects the operation of an internal combustion engine.

Many drivers are accustomed to thinking that the higher the octane number of the fuel, the better and hotter it is, to put it simply. But it is not so. The fact is that everything very much depends on the design of the engine itself, namely, whether it is adapted or not for 92 or 95 gasoline.

The main point of the octane number of gasoline is that increasing it affects the duration of combustion and, more importantly, performance due to the fact that it ignites under greater compression.

92 gasoline withstands less compression before igniting, and 95 more; Thus, 95 gasoline will explode at higher pressure and will burn a little longer, and this will add power to the car.

But if the engine design is not ready for higher octane fuel or, conversely, for less low octane fuel, then efficiency, on the contrary, will drop significantly, and you can feel it. The reason for this is the early detonation of low-octane gasoline and, consequently, its incomplete combustion.

So, when choosing the octane number of gasoline for refueling, let's start from what kind of gasoline is recommended to be filled by the manufacturer and find out point by point whether it is possible or not to fill in this or that gasoline in certain cases.

Should I fill in 92 or 95 gasoline if both options are recommended?

For many cars (more precisely, the designs and models of engines of these cars), both options for using fuel are possible. Toyota Corolla, Kia Rio, Hyundai Solaris and many other mid-size sedans and crossovers are adapted to both octane ratings.

But which gasoline is better to refuel in this case: 92 or 95? The answer here is simple - 95. High performance means high power, and this is not necessarily intended to achieve faster acceleration or higher speed.

No, on the contrary, the driving style retains the same dynamics, but with significantly lower fuel consumption.

Therefore, most often, but not always - again, due to the design of the engine - the higher cost of 95 gasoline can be compensated for by low fuel consumption (although, of course, not as much as diesel fuel).

However, many car enthusiasts deliberately choose 92 gasoline instead of 95, citing the fact that 95 gasoline is simply the use of additives. But here we must recognize the fact that the additives themselves are not harmful to the engine - after all, they are the ones that give the desired increase in deformation before combustion.

The use of certain additives, which are used at some low-quality gas stations, is harmful. Therefore, here you need to be more careful when choosing a gas station and refuel only at one specific gas station. You will most likely feel the quality of gasoline in the dynamics of the car and the sound of the engine.

However, there is nothing wrong with using 92 gasoline when the manufacturer makes both options possible: 92 and 95.

Most modern engines can automatically adjust and adjust the ignition timing of the engine if low-octane gasoline begins to detonate - all modern engines have a special detonation sensor, and if it detects one, the ignition timing is reduced towards earlier ignition, resulting in engine operation again becomes stable.

Is it possible to fill in 92 gasoline if 95 is recommended?

As we have already learned, the fuel in the engine is ignited by the spark plug in precise synchronization in a four-stroke cycle, which leads to an optimal combustion front. Low octane fuel is less stable and ignites too easily under the conditions found in a high compression engine.

This can lead to early or simply uneven ignition of the mixture of air and gasoline in the cylinder, as a result of which you may hear a distinct knocking sound - this is called “engine detonation”. The sound comes from uneven combustion.

In the worst cases, the fuel will not burn completely and will even burn out further in the exhaust system - in the catalytic converter, which can lead to its “welding”, and it is quite expensive. But nevertheless, in most cases you will not notice a difference, except perhaps a decrease in power and an increase in consumption...

Yes, yes, trying to save on gasoline in cases where you fill in 92 gasoline, and the engine of your car is designed for 95, leads to the opposite, because gasoline burns rather inefficiently. But you are more likely to notice a loss of power in tougher driving conditions (on the highway).

Moreover, if you regularly fill with 92 gasoline instead of 95, this can ultimately lead to premature engine wear and premature replacement of the catalytic converter.

Thus, answering the question whether it is possible to fill in 92 gasoline if the car is recommended for 95, the answer is: yes, it is possible. But only in rare cases and on the condition that you return to refueling 95 gasoline as soon as possible.

Is it possible to fill in 95 gasoline if 92 is recommended?

If you fill with 95 gasoline instead of 92, then nothing good will happen either. Since the engine is adapted for 92 gasoline, it will also not be able, due to its ignition timing setting, to effectively burn a different octane number, so again there is increased fuel consumption and a decrease in power.

In addition, 95 gasoline releases more heat during combustion and burns on its own a little longer, so this can lead to the melting of individual elements in the combustion chamber - most often spark plugs, less often valves, and much less often, melting pistons. But again, nothing bad will most likely happen if you fill it with 95 gasoline instead of 92 once - just dilute it with the recommended concentration as soon as possible.

Vladimir the contemplator Vladimir the contemplator

Source: https://koleso.temaretik.com/753671194982222809/kakoj-benzin-zalivat-92-ili-95/

AI 92 or 95 – which is better?

What gasoline to fill in the tank is indicated in the car manual, but as practice shows, not all drivers adhere to these recommendations. In an attempt to save money, many begin to fill their car with gasoline with a lower octane number than specified in the manufacturer's recommendations. Do you know what will happen if you fill in 95 instead of 92?

Until recently, there was an opinion that in Russia most oil refineries do not have the technologies and equipment that allow them to produce high-quality 95 gasoline. Therefore, to obtain it, 92 was used, the octane number of which was increased by adding specialized additives.

Over time, the presence of additives in gasoline begins to negatively affect the condition of the engine.

Currently, the question comes down more to choosing a gas station that will sell high-quality gasoline with its real octane number. Only by refueling at a proven gas station can you hope that the service life of your engine, spark plugs, etc. will be big.

What is the difference between 92 and 95 gasoline in terms of dynamics and fuel consumption?

Are there any differences between 92 and 95 gasoline in dynamics? Two cars were chosen for testing: Renault Sandero and Hyundai Solaris with a more powerful and modern engine. The test consisted of checking maximum speed, acceleration from 0 to 100 km/h, and elasticity (acceleration from 60-100 km/h in 4th gear and from 80-120 km/h in fifth). As a result, we were able to obtain the following data:

Cars	Renault Sandero	Hyundai Solaris
Fuel	AI-95	AI-92	AI-95	AI-92
Maximum speed, km/h	162,9	154,7	200,8	197,9
Acceleration 0—100 km/h, s	15,1	15,4	10,9	11,0
Elasticity, s	60-100 km/h (IV)	15,4	15,7	10,8	10,9
80-120 km/h (V)	25,1	31,8	15,5	16,6

The difference in gasoline for Hyundai is small: only 3 km/h at maximum speed and a little more than a second when accelerating from 80-120 km/h. More noticeable differences are noticeable in the Renault car, where 95 gasoline allowed the maximum to reach 8 km/h. more. The difference in dynamics became even more noticeable at the elasticity stage, when using AI-95 the car accelerated 7 seconds faster!

Consumption of 92 and 95 gasoline

Both cars continued to explore the site and, using gasoline of each brand, covered a special route along a 100 km long training ground, simulating urban conditions.

As the results showed, the difference in fuel consumption for different gasolines in this mode is more noticeable. For the purity of the experiment, the cars moved in pairs, and the drivers did not change in different races.

New gasoline was poured into the tank only after the old one was completely used up.

According to the test results, it turned out that Hyundai, when using AI-95, was more economical (15.6%), and Renault by as much as 27.3%. When converted into money, we can conclude why 95 gasoline is better than 92: per 100 km. on Solaris the savings will be 25 rubles, and for Renault the savings will be even greater - 80 rubles!

It is worth noting that everything depends on driving style, car brand, engine and fuel quality, so the numbers can vary significantly. What difference did you notice between 92 and 95 gasoline?

Source: https://auto.mirtesen.ru/blog/43654257476

What kind of gasoline to fill a car with?

It’s impossible to count how many copies have been broken around the age-old question of which gasoline is best suited for the “heart” of a car.

Adherents of using one type of fuel or another have a lot of arguments to convince their opponents that they are right, and in the vast majority of cases they succeed.

Moreover, both with the help of information materials and personal experience, which, as a rule, is more powerful evidence. How to determine what kind of gasoline you need to fill your car with?

The easiest way to determine the type of fuel suitable for your vehicle is to use the car manufacturer's recommendation. They are indicated in the vehicle operating instructions, as well as on the inside of the gas tank flap.

Open gas filler door

Foreign-made cars sometimes display numbers that are exotic to us: for example, A91 or A96 gasoline.

In some countries, for example, Japan, there is no division for A-92 or AI-95 gasoline, which is familiar to the Russian driver - there are only two types of fuel, Regular and Premium, which, in fact, correspond to the indicated Russian brands.

But let’s give it its due: on officially exported cars, manufacturers indicate markings that are understandable on any continent. A surprise in determining the type of fuel suitable for your “iron horse” can only await a car enthusiast who has bought a “gray” car.

As a rule, in the operating manual and on the gas tank flap, the manufacturer indicates gasoline with the lowest octane rating that can be used to “treat” the car: that is, if it says A-92 (American models may have A-91), then fill in gasoline brand A-80 is strictly forbidden.

It happens that Russian car enthusiasts disdain the manufacturer’s recommendations and fill the tanks of their cars with the cheaper fuel.

What can such tricks lead to? The fact is that automakers write recommendations for a reason: they, like no one else, are aware of what kind of fuel the engines of their models can “digest” without causing damage to the fuel system.

Automobile company engineers obtained this data as a result of many hours of testing with various brands of gasoline - therefore, they thoroughly studied the effect of the substances contained in the fuel on the parts of the fuel system and engine.

Of course, not all manufacturers take into account the quality of Russian gasoline, which at a gas station may be sold under the brand name AI-95, but in fact be AI-92.

In addition, not all domestic fuel producers meet the standards required to produce gasoline with the “correct” octane numbers.

But this circumstance is on the conscience of the owners of oil refineries, owners of gas stations (where, as you know, they can “tamper with” the composition of the fuel sold) and should be under the control of law enforcement officers.

We can state: the consumption of gasoline by an engine that is not authorized by the manufacturer can lead to very sad consequences. For example, failure of spark plugs, clogging of the fuel filter, breakdown of the lambda probe, which will be followed by excessive fuel consumption and, as the most serious consequence, malfunction of the power unit.

It would seem that everything is clear: since it is written in the operating manual “do not pour gasoline with an octane rating of less than 95,” then do not pour it, and your car will serve faithfully for a long time. However, there are exceptions to the rules. I will give an example from my own practice.

For quite a long time I fueled my new car only with fuel recommended by the manufacturer with an octane number of 95. But once I stopped at a gas station of one of the leading brands, I filled up with low-quality fuel, and the car stopped driving.

Fortunately, there was no need to clean the injectors or replace spark plugs (at that time, the mileage of my “iron horse” barely reached 5 thousand kilometers).

But the situation made me think: is 95 gasoline really that good? Here, too, fuel prices went up, and friends who drove the same model of car advised: try, switch to 92, you won’t feel much of a difference, except that you’ll lose a little power, but you’ll save.

After hesitating for several days, I decided to try it and poured 15 liters of 92 into the tank. Nothing extraordinary happened: I didn’t feel any significant loss in power, fuel consumption decreased slightly. I would like to note that I switched to gasoline with a lower octane number four years ago, and when undergoing a scheduled technical inspection, the service station workers did not make any complaints about the condition of the spark plugs, assuring me that they would cover several thousand more kilometers.

The sad end to the candles came after I refueled with low-quality fuel: the speed began to jump, fuel consumption increased, and the engine began to detonate (it began to “triple,” as people say).

After they flushed the fuel system, replaced the “dead” lambda probe and installed new spark plugs, I asked the technician whether the breakdown was caused by the use of gasoline with a lower octane rating than the manufacturer recommends.

To which I received an intelligible answer: the octane number had nothing to do with it, the reason was the quality of gasoline (presumably high lead content).

“In Russia, 95th gasoline is the same 92nd (and sometimes 80th), only “ennobled” with additives that not only increase the octane number, but also lead to fairly rapid failure of the spark plugs,” - the master explained to me.

And he added: there is no guarantee that a car running on high-octane gasoline (A-98) will drive better than 92 or 95. The same applies to the so-called branded gasolines - AI-95 Premium, Ecto, Pulsar, which are a simple marketing technique: their composition is practically no different from standard 95 (with the exception of some additives), and their cost is several times more expensive . Subsequently, I heard such revelations from other specialists.

Of course, I do not call for refueling a car with 92-grade gasoline, which, as it may seem from the story I described, is cleaner than 95—every car enthusiast must make a decision based on his own conclusions.

As practice shows, the octane number of gasoline is not as important as its quality - the same content of lead, additives and other not entirely useful substances that over time damage spark plugs and other elements of the fuel system.

Source: https://avtoexperts.ru/article/kakim-benzinom-zapravlyat-avtomobil/