Gasoline is a traditional fuel used to operate vehicles. Gasoline is one of the fractions obtained as a result of oil distillation. The norms and requirements of GOSTs define four qualitative subgroups of the produced gasoline:

The digital component of the name of the brand of fuel is information about the level of its octane number. This indicator indicates the state of molecular stability of the fuel, which determines the level of its detonation. Consequently, the high octane number of the fuel guarantees high stability of its molecules and, accordingly, reduces the level of fuel detonation. Detonation is the spontaneous combustion of fuel during compression in the engine, which results in an explosion in the cylinder. At the moment of possible fuel detonation, the piston system and other components of the engine system experience critical loads, which leads to premature wear.

For a motorist, it will be more rational to use gasoline with the octane rating recommended by the car manufacturer, and not try to save on the price, for example, 92nd before 95th gasoline, since later such savings may entail serious repairs.

Today, filling stations have a full range of gasoline brands, but the priority of popularity and demand is firmly held by AI-92, 95, 98 fuel brands. the octane number of this fuel is determined by a research method. It is quite natural that the price depends on how much higher the octane number of gasoline is. The larger it is, the more expensive the fuel is for the consumer.

Manufacturing technology

Modern technologies provide three options for the production of fuel for automobile engines:

Attention! This method is used mainly in the EU countries.

In specialized laboratories, low-octane gasoline is a product of direct distillation of oil. With the help of special additives and additives, it is being finalized in order to increase its octane number to an acceptable commercial level.

Types and methods of application of additives and additives

Metallic. The main component of metal-containing additives is tetraethyl lead. This component of the additive ensures the full return of the fuel to the built-in power and maximum performance of the vehicle engine. The main disadvantage of such a fuel is lead deposits on the walls of the internal combustion chamber, which over time can lead to serious diseases of the respiratory system of the human body.

Attention! Today, the use of tetraethyl lead as a fuel additive is prohibited and is no longer used worldwide.

Mixing gasoline. This method is based on the idea of ​​technological mixing of gasoline with a liquid chemical substance that has a high resistance to fire. The use of high-octane (more than 250 units) chemical monomethylaniline is successfully practiced here.

The use of ethers and alcohols. The most economical and simplest option for increasing the RAN of gasoline fuel, which is applicable to almost all manufacturers of automotive fuel. The basis of this method is mixing low-grade fuel with essential substances. The state has introduced restrictions on the content of ethereal alcohol-containing substances in gasoline fuel up to 15%, since a higher concentration of ethereal additives aggressively affects rubber elements.

AI-92

Gasoline AI-92, belonging to the Regular motor gasoline group according to its quality indicators, is a high-octane fuel adapted to the operation of carburetor internal combustion engines. A feature of carburetor engines is that they work at a sufficiently significant level of compression. Fuel grade AI-92 provides detonation stability and stable operation of the car engine. This gasoline is gradually ending its "life", its production has been discontinued in the EU countries. In Russia, AI-92 is the most bought brand of fuel. AI-92 can be produced leaded (0.15 g / l of lead) and unleaded (0.013 g / l of lead) with anti-knock additives in its composition.

AI-95

According to its performance, this gasoline belongs to Premium motor gasoline, it is considered to be of higher quality. In its production, catalytic cracking gasoline of distillate raw materials with the introduction of isoparaffinic, aromatic additives, and gas fuel acts as a raw material base. There is a sufficient amount of anti-knock additives. The presence of lead in the AI-95 unleaded fuel is limited to 0.013 g / l.

Attention! Auto gasoline "Extra" is identical to the ordinary AI-95, but free from lead additives.

The main differences between the two gasolines

It is impossible to give an unambiguous answer, which gasoline, of the two considered, is preferable. It should be remembered here that the main indicator of the qualitative assessment of fuel is the volume of alcohol-containing substances added to the original gasoline mixture. The concentration of alcohol-containing substances AI-95 is two to three units higher than this indicator for AI-92. The difference is so small that the driver simply will not notice significant differences in the operation of the motor. Therefore, nothing terrible will happen either with the engine valves or with the candles, if instead of AI-92 gasoline is poured into the AI-95 tank.

The main quality is in the fuel. With its proper level, the engine will not suffer. Naturally, there is a difference in price. Gasoline AI-92 will always and everywhere be cheaper than AI-95. And here it is better not to save.

Many car owners are confident in the need to strictly adhere to the recommendations prescribed by the manufacturer for each model in the car passport. Often, violation of basic requirements entails costly repairs. For example, the manufacturer indicates that this engine must run on AI-95 fuel, and the owner fills the car with AI-92 gasoline or a mixture of 95th and 92nd. In this case, the problem with the motor is not far off, a matter of time. The explanation for this is simple - the higher the octane number, the lower the combustion temperature of the fuel. When fuel with low octane burns, the temperature values ​​exceed the manufacturer's permissible standards, and there is a risk of burning some parts.

Advice! If, according to the passport, the engine is equipped with AI-95 gasoline, then it should be filled. Having "fed" the AI-92 car with a motor, problems may arise.

Is it allowed to mix 92 and 95 gasoline

These two types of gasoline not recommended to mix since they won't mix completely - AI-92 will sink to the bottom, and AI-95 will rise up. But if the car is designed for AI-92, then its filling with AI-95 is quite acceptable - this will even improve throttle response and engine speed.

For modern engines equipped with knock sensors, replacing AI-95 fuel with AI-92 is more comfortable. When signs of detonation appear, the sensor sends a signal to the electronic control unit and thus the engine operation is corrected, minimizing the effects of detonation.

Conclusion

Thus, it is impossible to give a clear unambiguous answer which gasoline will be better. It remains only to give advice to car owners to use the brand recommended by the car manufacturer for refueling their car. Use the services of proven gas stations selling certified products.

Which gasoline is better to use for the AI-92 or AI-95 car:

There are problems: Which gasoline is better than 92 or 95? The controversy continues to this day! And we did not find a clear answer! Everything revolves around the supposedly complex and harmful additives for the engine, which are added to the original form of fuel raw materials only to increase the octane number.

I saw that gasoline is obtained, as always, from oil. In Russia, in particular, "Pervak" comes out as much as 88 octane. Therefore, in order to bring it to the agreed international classes 92, 95, 98 - that is, to increase this very number, various additives are added to the "pervak".

Difference between 95 and 92 gasoline?

Everything is individual - it depends on many factors:

• Car model,
• Engine brand,
• Unit volume and power,
• Transmission,
• Mileage (using 92 and 95 there is a mileage difference - measured at Ford),
• Gas station (gas station Lukoil, Gazprom, etc.),
• Other.

My experience: which is better than 92 or 95 gasoline - Test

Gasoline test: which is better than 92 or 95

Checked with the same amount of the filled tank. First, I drove through the entire tank on 95 gasoline and recorded the mileage, and then from 92. By the way, I used a mixed mode: city and highway.

There is a difference in mileage: why did I run a bit more than 92 for 95.

And then I compared them in terms of financial indicators. At that time, the difference in price was 3 rubles, 95 more expensive than the 92nd.

1000 km. with a flow rate of 10 liters per 100 km. - you overpay for 95 by 300 rubles. And this is an extra 8 liters of the 92nd! Multiply by a year and a penny can be saved on the 92nd.

By the way, we successfully went to rest in Crimea and our South, which we advise you too:

But remember what I said about the increased mileage when using the 95. Duck, according to my calculations, the difference was not significant - for a year about 1,500 rubles when traveling 10 thousand km a year.

I came to the conclusion (like many others) that it is better to fill the 92nd gasoline in the city, and if somewhere over long distances - the 95th! Something like this.

In the dynamics of the engine, I did not observe it significantly during measurements, only if I wound myself: supposedly, it seems that you accelerate faster or the engine runs quieter. To each his own.

At the next MOT, the service said that the candles are in order - normal, the filter is also.

Well, safe for you to ride, and without a baton!

Starting this little research from the premium segment, you can ignore a few traditional exclamations on the topic “Will someone, buying a car for 3-5 million, think about saving gasoline?”. Yes, it will - many buyers value moderate consumption in their car and an adequate cost of the monthly ration. Therefore, recalling the unpretentious representatives of the "premium" is a very urgent task.

However, I managed to remember very few of them - more precisely, only one. Of course, it would be too optimistic to expect from modern engines of the "German troika" or "Japanese two" the possibility of consuming 92 gasoline. But at first glance, less demanding "Americans" like all Cadillac models and the overwhelming majority of Jeep want to see in their tank fuel with an octane rating of at least 91 according to the American standard - that is, the equivalent of the Russian AI-95. Yes, even "mammoths" like the Grand Cherokee, Escalade and Tahoe suggest a 95 in their huge tanks. The only exception is the Jeep Wrangler, which is ready to run on unleaded gasoline with a RON 91 minimum.

Middle segment

In the middle segment of cars that allow you to save on gasoline by a couple of rubles per liter, of course, there are more - here the class already allows you to have this characteristic among the competitive advantages. Nevertheless, no one particularly emphasizes the ability of cars to digest 92nd gasoline - as a rule, you can find data on the type of fuel only in the operating instructions.

Under the hood of the Ford Kuga "2016 – present.

For example, Ford has such data. The manuals of Fiesta, Kuga, EcoSport, Explorer and others clearly state: use unleaded gasoline with an octane rating of at least 92. In the Mondeo manual available on the website, however, the American standard AKI with an octane rating of 87 is indicated - but it also corresponds exactly to “our "AI-92.

At Honda, unlike many others, the type of fuel used is spelled out directly on the website, among other technical characteristics. It seems that the fact that this fuel is AI-92 contributed to this in part. Gasoline of the "Regular" class is recommended for both Pilot and CR-V with both 2 and 2.4 liter engines.

Photo: Honda Pilot "2015 – present and Honda CR-V" 2016 – present.

Another Japanese manufacturer, Mitsubishi, also has "omnivorous" cars in its arsenal - albeit only two. This is an age-old, but this and much more recent Outlander: they have the mark “AI-92” in the “Fuel Type” column, while the new Pajero Sport is no longer satisfied with this gasoline.

Nissan has a similar situation: here only in the description of the budget Almera it is clearly stated that you need to fill in unleaded gasoline with an octane rating of 92. All other gasoline models modestly indicate "gasoline" as the fuel type, moreover, there are no operating manuals on the site, as well as clear guidelines in brochures. A long search leads us to what logically follows from this unknown: all other Nissan models prefer 95th gasoline.

The situation with Toyota is even more interesting. Here, the recommended fuel type differs not only between models, but even within the same model equipped with several motors. So, a Corolla with base engines of 1.4 and 1.6 liters can only be refueled with gasoline with an octane rating of 95 and higher, but the older 1.8-liter engine can also digest an octane rating of 91. This looks doubly interesting against the background of that that the compression ratio in engines 1.6 and 1.8 is almost the same - 10.2 and 10, respectively. But for Camry the situation is the opposite: the younger engines of 2 and 2.5 liters digest 92nd gasoline, while the V-shaped "six" requires 95th. The same situation with the Land Cruiser Prado: the 2.7-liter unit "eats" the 92nd, and the four-liter engine is the 95th. And off-road vehicles represented by the RAV 4 and Highlander, led by the Land Cruiser 200, can consume "cheap" fuel in all petrol versions. Concluding the conversation about Toyota, it is worth noting that it also saves money not only thanks to the hybrid transmission, but also due to the price of fuel.

It is not easy to find information on the recommended type of fuel from Hyundai. The operating manuals are not presented for all models, but even those that are, sometimes do not contain the necessary data. So, there is no information on the required fuel for Creta in the manual - but there is data, for example, for Elantra and i 30. Recommendations differ depending on the country of operation: in Europe, you need to refuel with 95, and outside Europe, to achieve optimal performance, it is enough to use unleaded gasoline with an octane number RON (research method) 91 / anti-knock index AKI 87 - in other words, our 92nd.

Compatriots from Kia are a little more open about what to "feed" their cars: for the Rio, the official website exhaustively lists "unleaded gasoline with an octane rating of at least 92". For other models like cee’d, Optima, Sportage, Venga, and so on, you need to get to the owner's manual to see the same data as Hyundai.

Budget segment

We say "budget segment" - we mean "Lada": the domestic manufacturer is confidently leading in terms of sales. He is equally confident in specifying fuel requirements in the technical characteristics of his vehicles. The only "disappointment", perhaps, is that the most budget models do not use the most budgetary gasoline: Granta and Kalina, and at the same time 4x 4, need at least 95th. But with Vesta and Xray, the situation is the opposite: both new products from the Volga Automobile Plant are happy to accept the "cheap diet". The situation with Largus is twofold: with an eight-valve engine with 87 hp. he is content with AI-92, but a more powerful sixteen-valve unit with 102 hp. already requires AI-95. It is also curious that on Granta the same 87-horsepower engine, as we remember, consumes 95th gasoline, while Largus has it reconfigured to 92nd.

Another budget carmaker that is keen on reducing the cost of ownership of its products is Ravon. There are no reservations at all here: any of the Uzbek cars of overseas origin from R2 to Gentra is ready to eat AI-92 all its life and not show any signs of dissatisfaction.

There are "exceptions to the rule 95" and some Chinese manufacturers - for example, Lifan. So, the new Solano companions run on 95th gasoline, but the far from new Smily, together with Cebrium, is quite satisfied with the 92nd.

Well, the logical "final chord" of the list is the products of the Ulyanovsk Automobile Plant. It would be very strange to see 95th gasoline in the requirements for the content of the "veteran" Hunter - and, of course, it is not there. It is also absent in the specifications for the rest of the SUVs: all UAZ gasoline products work successfully on the AI-92.

Summing up

Taking a look at the list, it is easy to conclude that new cars capable of digesting 92nd gasoline are by no means the majority on the market. Nevertheless, there are also plenty to choose from: if you drive a lot and are careful about the choice of fuel, perhaps we made the task of finding a new car a little easier for you. In addition, it is worth remembering that forums dedicated to absolutely any brand are abundantly dotted with topics like "92 or 95", "Liu 92 and everything is fine", "Liu 92, I regularly change candles / catalysts / pistons and I'm fine" and so on. ... Hot discussions that "there is no 95th in Russia - it's all 92nd with additives!" do not subside for a second, and therefore the final choice of the liquid poured into the tank, as always, remains with the owner.

I fill in my Skoda 95, although 92 is allowed. Buying a car for more than "a million" trying to save on gas? What stupidity. If I didn’t have enough for gasoline, I would buy a VAZ = 2104 and ride for cheap.

But some of my friends, it is true, they save and pour 92 on used foreign cars.

What is the threat?

There were also questions about the choice of fuel for the car 25 years ago, with the only difference that before people chose between the 76th from the huckster, which cost half the cost, and the 92nd from the gas station. The economic benefit in that case overlapped the potential harm, so many people filled in low-octane gasoline, contrary to the manufacturer's recommendations.

92nd instead of 95th

Today the difference in price between 92nd and 95th is about 3 rubles. That is, the savings on one tank are about 150 rubles. 1000 rubles can be saved only after 5 thousand kilometers. And 10,000 rubles - only after 50 thousand kilometers. During this time, much more can be spent on repairs due to the wrong fuel.

But what does “wrong fuel” mean? Wrong is one that is not allowed to be used by the manufacturer. That is, if your instructions or on the fuel filler flap says "not lower than AI-95", the 92nd gasoline will be wrong for this car, even though the car feels as good as it gets. And the point is not even that the engine is calibrated for a certain type of fuel. And the fact is that if something happens to the engine during the warranty, the service will first take the fuel for analysis. And if the tank is not what the manufacturer recommended, there can be no talk of any warranty repair.

However, there are some nuances here. For example, the same French K4M engine under the hood of Lada Largus requires only 95th, and under the hood of Nissan Almera, Renault Logan and Sandero can work on 92nd. Moreover, Renault even allows short-term operation of the engine on fuel with an octane rating of 87 according to the research method, that is, even on a low-quality 92nd, the engine will not die.

Why, then, residents of Togliatti so strongly recommend filling only the 95th in the tanks? Engineers attribute this to the best economy, throttle response and environmental friendliness. Plus, sometimes they talk about a certain technological reserve and reinsurance, they say, we all understand what country we live in and what kind of gasoline we refuel. Therefore, if the 95th is recommended, and something worse gets into the tank, it will not be scary, but if the 92nd is recommended and something worse gets into the tank, then the manufacturer will, in theory, have to be responsible for the engine breakdown. So he is reinsured.

But still. In addition to the desire to save money, many drivers, filling the 92 instead of the 95, hide behind the fact that our 95 has too many harmful additives, and the 92, although it has a lower octane number, is better. In fact, rumors about the disgusting quality of 95th gasoline are too exaggerated. Yes, it is not perfect, but if you refuel at branded gas stations, there will be no crime.

Moreover, for you to understand, there has been no 92nd in Europe for a long time. Only 95, 98, 100 and other fuels. So, if you have a European car or a car that is sold, including in Europe, the 95th will be the unambiguous choice. Even if the 92nd is allowed on the hatch or in the instructions.

95th instead of 92nd

95th instead of 98th

The difference in price between the 95th and the 98th is already more tangible, therefore (and also because the 95th is still considered the main type of fuel for modern gasoline cars in Europe) if the instructions allow for both fuels, you can constantly refuel 95th, and 98th to fill only on very hot days. Why? The fact is that the higher the temperature, the greater the risk of detonation, and with high-octane fuel this risk decreases.

But if only the 98th is recommended for the engine without any reservations, you should not indulge in the 95th - it may end badly. Usually the 98th is recommended to be poured into very modern motors with high efficiency and complex electronics. These motors are extremely sensitive and finicky about fuel quality, so for them replacing the 98th with the 95th is much more sensitive than replacing the 95th with the 92nd in engines that are designed for the 95th. I'm not talking about the fact that a one-time pouring into the tank of the 95th will lead to a major overhaul of the engine, I am saying that you cannot constantly pour the 95th. By doing this, you are, as it were, borrowing from the motor - you save now, so that later you can spend money on repairs.

98th instead of 95th and 92nd

If you have money and a desire to fill the 98th instead of the 95th, you can safely do it, nothing bad will happen. Modern engines have systems that adapt to fuel. And a higher octane number, in contrast to a lower one, is harmless for almost all cars.

Now a few words about the benefits of 98 gasoline. Recently, both manufacturers and gas stations have been agitating to pour only 98th gasoline into cars (or even 100th - there is already such one). At the same time, there are no clear arguments, only unsubstantiated phrases that the 98th, they say, is better and that's it. I cannot say anything about this, because no experiments and laboratory experiments have been carried out.

And about the cleaning additives, I can only say one thing - if you pour the 98th constantly, then yes, the engine will be cleaner. But if you pour it in from time to time, then you can make it even worse by washing off some large piece of sediment, which then gets to where it doesn't need to be.

Alexander Dolgikh