What brand of gasoline is best to fill in?

What kind of gasoline is better to fill in?

Content:

What is the difference between fuel 92 and 95?

Both brands of fuel are in demand among drivers. Of course, they have a number of differences, because otherwise they would be sold at the same price and would not be divided into classes.

The main difference is the octane number. Class 92 fuel has a relatively low octane number, but this does not mean that the quality of gasoline will be the same. Experienced motorists consider this option cleaner. It is believed that grade 95 fuel is produced from grade 92, adding additives to the mixture that are designed to increase the octane number. This method of producing the 95 is considered legal if it is manufactured in special factories. However, no one is immune from situations when gas station employees perform this procedure on their own in order to deceive and make money from a gullible buyer. The quality of such fuel is, to put it mildly, low.

Compression ratio

What kind of gasoline is better to refuel with: what manufacturers say

When deciding which gasoline is best to drive, you should start from what is written in the instructions. Manufacturers, as a rule, indicate this point. However, not every vehicle owner retained the manual. You won’t even find a document for a used car that has been driving for more than one year.

If you can’t decide which gasoline is the best , rely on your own feelings. So, if the manufacturer advises using grade 95, but in fact it turns out that the vehicle behaves better on grade 92, then in this situation you can deviate from the recommendations. Also, resourceful gas station operators should not be ignored, because the brand of fuel that costs more is more often subject to “freezing.”

If the driver, when filling in 92nd, seeks to save money, while knowing that the brand that produced the car recommends filling exclusively with 95th, there is something to think about.

What is the best gasoline? Is it worth saving on fuel? The problem is that the higher the octane number, the lower the ignition temperature of gasoline. Due to the predominance of rather high temperatures, over time, system components, the operation of which depends specifically on temperature, fail. Nothing bad will happen if you “disobey” the manufacturer several times, but if using the 92 instead of the 95 becomes a constant occurrence, you should be prepared to spend a lot on repairing the power unit. It is for this reason that if your engine must run on more expensive fuel, then you should give preference to it.

Is it possible to mix different brands of fuel?

If a driver is trying to save money, he will certainly try to mix two classes of gasoline. This is absolutely not worth doing, since the fuel does not mix with each other. Of course, a duo of different AIs will help save money, but it will have a negative impact on the condition of the engine, which means that in the future you will have to invest a lot of money in restoring the unit. Each raw material has a certain level of density, so the more economical option will end up at the bottom of the fuel tank, while the 95th will go to the top. First of all, the engine will consume the first, then the second.

What kind of gasoline is better to refuel if the manual recommends AI-92? In this case, the owner can use the 95th grade without fear of harming the engine. In this way, the traction and functionality of the motor can be improved.

Fuel test: which gas station has the highest quality gasoline in Russia

Any major gas station chain offers a delicious hot dog and invigorating coffee. What about the fuel? Where can I refuel so that the car, as they say, will move? And where in the end do they cheat by not paying for what they paid for? We will look into the faces of direct customers who visit various gas stations day after day. They sense the difference between competitors better than any device and immediately recognize underfilling using the instrument fuel gauge.

In Russia as a whole: rating of large gas stations by gasoline quality in the central part of the Russian Federation

Our area of ​​interest is heavyweight wrestling. Interregional giants Rosneft, Lukoil, Gazprom with their oil refining plants are actively competing with the “outbidders” - Tatneft and Shell. Small networks are out of review. Guests prefer to avoid intra-regional LLCs.

Based on surveys of drivers in the Central Federal District, we determined which gas station has the highest quality AI-95 gasoline. This is a semi-state Gazprom. The remaining networks are popular in descending order:

There is only one clear outsider - completely private Lukoil.

95 EURO from time to time does not exactly meet the points of the Technical Regulations of the Customs Union on fuel. In fact, the car either drives or doesn’t drive, giving a Check Engine light. There have been complaints about Tatneft gasoline regarding poor starting and stalling when cold in the cold, which indicates problems with volatility. In the diesel fuel category, they mostly deviate from winter standards. There are no malicious violators. There are gas stations that neglect incoming controls, and production facilities sometimes fail. In the winter, the semi-state Rosneft and its BP network were caught in this situation more than once.

Under the guise of Arctic diesel with a waxing temperature of -27°C, summer diesel fuel was poured into the tank, from which paraffins precipitated at -5°C. You can insure yourself - for example, by heating the fuel tank or installing a fuel filter heater.

The main flaw of foreign Shell is franchisors, who sometimes let the quality down. Officials are only in Moscow and the region, and in the regions they are simply purchased signs. Hence all the complaints. Some do not feel the difference between V-Power and a regular “fifth”, others – between 92 and 95. The winter washer is of high quality, but you shouldn’t how much anti-freeze you pour into the tank

In Moscow and the region: which gas station in the capital has the highest quality gasoline with an octane number of 95

Gazprom's Gazprom Neft (GPN) is recognized by the capital's drivers as an impeccable guarantor of good fuel. Supplies are strictly controlled, the characteristics of gasoline and diesel correspond to the papers. There are no comments about the service: the cafe is delicious, the toilet is clean, the store has basic necessities.

GPN leads the ranking of gas stations in terms of gasoline quality in the Moscow region. In general, the trend in the distribution of trust in fuel distributors is similar to the all-Russian one:

The fuel from Shell and Trassa is not inferior in quality to Gazpromneft. In fact, these are the same fuel, since the “outbidders” buy them from the Moscow Refinery, whose owner is the same GPN. Drivers like Shell because of the post-payment system, and Trassa - for slightly lower prices (within 30-40 kopecks).

Relatives of BP and Rosneft transport fuel from their factories (Ryazan and Yaroslavl refineries). The fuel itself is not bad, but due to control problems, sometimes a low-grade product leaks into the market.

ESA purchases gasoline and diesel from either Rosneft or Gazpromneft plants. Muscovites do not express any comments about the gas stations of this network. Neftmagistral pours products from the Yaroslavl Oil Refinery into the tank. Previously, there were complaints about the cleanliness of the fuel equipment after long-term use of the “fifth” of these gas stations. Now such remarks have not been noticed.

Tatneft cooperates with the Moscow Oil Refinery. In the region, gasoline is often left behind and service suffers. There are gas stations that are not ready to provide secondary services - hot coffee, toilet, tire inflation equipment.

At Lukoil, as in the overall picture, it doesn’t happen once in a while. It happens that gasoline is good, and winter diesel makes the car “sink.” There are many completely opposite situations. This gas station has its own supplier – the Nizhny Novgorod Oil Refinery. The deep oil refining units are completely new and are capable of producing EURO 5 fuel. It is not clear where this contrast comes from.

On the way to the South: which gas station on the M4 highway is better to refuel in the summer

To meet the sea you have to pass through the Tula, Voronezh, Rostov regions and Krasnodar region. In the vicinity of Tula, the situation with gasoline and diesel fuel is absolutely similar to Moscow. When climbing closer to the South, follow the all-Russian guideline for AI-95:

1. Voronezh region: Gazprom (Astrakhan plant) and Rosneft (Ryazan oil refinery).
2. Rostov outskirts: Gazprom (Astrakhan oil refinery), Shell franchise (purchases from the Saratov oil refining company), Bashneft (Ufa oil refinery).
3. Krasnodar region: Gazprom (Astrakhan facilities) and Rosneft (Saratov plant).

Based on the stories of travelers, we found out which gas station is best to refuel within the transit areas. This is Gazprom. Although they are quite underfilled, the car drives as expected.

Advice. When leaving Moscow, plan to refuel after about 200 km. Gas stations 300-400 km from the capital are often overcrowded with cars, since the tank is empty by this mileage.

Where they underfill: rating of gas stations by underfilling

Keeping a paid liter or two on the balance sheet of a gas station is a completely familiar goal that is usually set for gas stations. If you don’t want to be deceived, demand that there is no human contact with the gun while pouring fuel into the tank. Another option is to avoid visiting gas stations with dishonest intentions.

The black list includes those who like to add extra 0.5 liters or more:

• Gazprom and Gazpromneft.
• Route.
• Neftmagistral.
• Tatneft.
• Rosneft.
• B.P.

Any of the ESA gas stations is distinguished by transparent accounting of the displacement count in Moscow. Shell and Lukoil also do not suffer from dependence on black money - even in the regions the counter counts what it has.

Where to buy high-quality AI-98

Definitely not in the regions. In many large towns, the “eighth” is not popular, so it sits in storage, losing its condition. No, there are turbo engines, but the 98 justifies the investment only in hot weather or under high loads. The power without additional chip tuning is the same, whether on the “fifth” or on the AI-98.

Advice. If the engine regularly spins up to high speeds, and your driving style is dominated by sharp starts and accelerations, don’t skimp! Fill with fuel with more octane, otherwise detonation at extreme conditions will kill the piston and cylinder block within a year or two.

In the Moscow region, high-octane fuel is in demand. Gazpromneft, Lukoil, Shell and BP – these gas stations in Moscow supply the highest quality AI-98 gasoline. The fuel is clean and infused with proprietary multifunctional additives (detergents + corrosion inhibitors, etc.).

For your information . “Fifth”, “eighth” and “hundredth” are no longer produced by adding additives to AI-80.

When to pour 100th and what brand

The first to reach the hundredth octane number (OCN) using the research method is the Lukoil company. In 2017, ECTO-98 was replaced by ECTO-100. A year later, Gazpromneft got involved, putting up the G-Drive 100 for sale. The “eighth” Ultimate from BP and V-Power Racing from Shell are the main competitors of the “hundredth”, since the engine ratings are almost identical.

The highest OP indicators were noted for G-Drive 100, and the largest share of marketing was for EKTO-100. This does not mean at all that one is an outsider, and the other is worth pouring on everyone. No, gas station ratings are not appropriate here, to each his own:

• Shell V-Power Racing: civilian rides in cars with turbocharged engines without a touch of insolence and additional tuning. BASF Nemo 6125 additive has the best comprehensive protection among competitors.
• ECTO-100: “chip” turbocharged engines in daily use.
• BP Ultimate: data are similar to ECTO-100, but the multifunctional additive is better. Scope of use: where Shell is.
• G-Drive 100: boosted naturally aspirated engines in any operation and sports trips on closed tracks with turbocharged power plants.

Higher OR is achieved by increasing the concentration of oxyginates and benzene. They contain additional oxygen, which has a beneficial effect on the completeness of combustion, but reduces the calorie content of the fuel. Therefore, 100s are useful only because of detonation resistance. But when using them, the interval that determines how often to change the engine oil should be shortened - the load on the liquid on 100-octane gasoline increases.

avtoexperts.ru

In Europe, at most gas stations there is no gradation in the choice of gasoline - there is only gasoline and diesel. This surprises unprepared Russian tourists: how can it be - at large gas stations we have huge billboards with a list and variety - 92nd, 95th, 98th, and recently also 100th. And this is not counting special detergents, branded or branded brands. We will talk about them some other time, but for now we will focus on the topic of which of the “regular” gasolines is better to fill in - AI 92, 95, 98, 100.

Manufacturer version

It would seem that this is a question - what the manufacturer wrote on the gas tank flap, that brand of gasoline should be used. The manufacturer knows better the design features of his equipment and what fuel it runs on and works better. Alas, this logic does not always work. Here are four typical examples.

1. About 7-8 years ago, AvtoVAZ suddenly began to require the use of strictly 95-octane gasoline for all its models. “Priora”, “Kalina” and even the old “Niva” (oh, sorry, 4x4) suddenly lost the ability to refuel with 92nd. At the same time, the engines in all models are archaic, the design is primitive, there are no technical requirements for increasing the octane number. It was rumored that AvtoVAZ was able to meet the new environmental standards only using 95 gasoline, which is why it officially banned the use of 92 gasoline. And the fact that buyers had to overpay - so who cares?

2. The Volkswagen Polo sedan of the first years of production had a manufacturer's instruction to run on 98-octane gasoline. The 95th was allowed as an exception, to get to the “normal” gas station cleanly. The first owners of the car were a little shocked, they seemed to be buying a budget sedan, but they had to fuel it like a sports car. Fortunately, after restyling, the manufacturer began to specify 95 gasoline for the Polo.

3. The Renault K4M engine is used in a bunch of cars of different brands. Renault allows the operation of this engine on 92nd gasoline without any problems, but the instructions for the Lada Largus said 95th and 98th. Why, since the engine hasn’t changed one bit? This mystery is great.

4. The new Renault engine, which is used on the Arkana, has a very complex design. It has direct injection, turbocharging, coating on the cylinder walls instead of liners, very thin oil, and 150 “horses” extracted from a modest 1.3 liters of volume. By all indications, such an engine should run on fuel with a high octane rating, but the manufacturer officially recommends 92nd gasoline. The mileage of such cars is too low to draw far-reaching conclusions, but for now such a recommendation looks more like a marketing ploy.

We gave all these examples to show that you can listen to the official point of view on the use of gasoline, but this is not a dogma, because the manufacturer does not have the goal of saving customers money and can specify more expensive fuel for one reason or another.

Hardware version

If information from the manufacturer cannot be trusted, then how can you determine what gasoline to fill? Some people rely on the compression ratio of the engine, saying that you can drive 92 if it is less than 9.5, and if you need 95 more, but this is a formula from carburetor times (some may even remember the method of converting to 80 th gasoline using a second block gasket, but this is really old school). Modern injection systems work wonders and allow the use of gasoline with a low octane number even on engines with a high compression ratio. Some people think that they don’t make other gasolines other than AI-92 in Russia (they say they only have additives), so they only refuel with it. Someone pours the most expensive thing there is, as if it is of high quality. But all these methods of identifying the optimal gasoline are very questionable.

In our opinion, the best indicator for determining the type of gasoline is your own feelings. You can simply experiment, fill in different brands of gasoline and compare engine performance, dynamics, and consumption. Engine design, injection type, boost or lack thereof, and even driving style - everything will contribute. If the engine suffers from low-octane fuel, it will clearly demonstrate this: vibration, traction, and unstable operation.

It is not necessary to try everything in a row - for a regular production engine the choice usually comes down to 92 or 95 gasoline; there is no point in going higher in experiments. Higher octane stories are necessary for tuning, which has become easier and more accessible with the spread of turbo engines. I downloaded new firmware for a couple of thousand rubles and now the car has already increased its power by 20-30%, but the hardware remains the same, the load on it has simply increased. In such a situation, increasing the octane number will be very useful. It makes sense for owners of cars tuned in this way to try 98 or even 100 gasoline. But, again, this is not a dogma; you need to check it on each specific car.

Money version

There is a common belief that a car uses less gasoline with a higher octane rating due to higher combustion efficiency and that due to consumption, you can even reduce fuel costs when using more expensive fuel. Such things are perfectly tested by experiment, and the magazine “Behind the Wheel” recently conducted one. They had two Vestas, with 1.6 and 1.8 engines, as well as three types of gasoline - 92, 95 and 100.

Having passed the same route on each of them, the testers measured efficiency and power. Yes, gasoline consumption on the 95th compared to the 92nd decreased slightly, but the difference was at the level of error: 0.1 liters per 100 km for one engine and 0.4 liters per 100 km. This difference is clearly not enough to recoup the overpayment for more expensive gasoline. At the same time, testers did not notice a difference in dynamics, and on the stand the motors showed similar power. And if there is no difference, then why pay more? It’s interesting that 100 gasoline couldn’t improve the performance at all compared to 95; considering its price, it’s just a waste of money. Exhaust, of course.

This test clearly shows that if the engine works well on 92-octane gasoline, then this type of fuel will most likely be the cheapest to operate - those who primarily think about saving money do not need higher octane gasoline. It’s another matter if the car doesn’t work well on the 92nd – you can’t do without the 95th.

In general, the abundance at Russian gas stations is rather good. Drivers have a choice - some will prefer the cheapest option, which is enough for a quiet ride, others want to get the most out of every kilometer and are ready to pay for it. It is only important to decide on your priorities.

What gasoline to fill: eight answers and one piece of advice

What kind of gasoline should I put in my car?

Only the one recommended by the factory that manufactured your car. Its type is indicated in the booklet supplied with the car, as well as on the back of the gas tank flap. Experiments are not needed here: after all, each engine is calibrated for a specific type of gasoline. But microprocessors and other electronic gadgets are far from omnipotent: they will not force an engine designed for Premium to digest low-octane Normal.

What will happen? Under sharp accelerations and heavy loads, the knock sensor (who has one) will constantly work, and this leads to unstable engine operation - the car jerks and loses dynamics. And if there is no knock sensor, then there may be problems with engine overheating and premature wear, or even burnout of the cylinder block gasket, destruction of pistons and valves. In addition, fuel consumption will increase slightly.

Finally, the strongest argument is the guarantee! If you really started putting the hell out of the tank, and then came with complaints, then at the warranty service, if a controversial situation arises, they will take a sample of gasoline from the tank, after which, with a clear conscience, they will offer you paid repairs. And they will be right.

As a temporary measure, you can allow the use of 92 instead of 95 - if there is no other at the gas station, but you need to go. But there’s no point in frolicking about it. However, everything is heading towards the fact that there will be no 92nd soon. And I’m tired of the talk about how 95 is always worse than 92.

Is it worth using Ultimate gasoline if regular gasoline is available?

I'm convinced it's worth it. I only fill my car with Ultimate and other Ecto. But not at all because someone’s stupid advertisement promised ten percent fuel savings - in practice this cannot be. It’s just that gasolines with such prefixes in the name have increased cleaning power and constantly remove all sorts of rubbish from the fuel system. We have repeatedly tested this in examinations - yes, it works! Therefore, if you take a dirty engine and start “washing” it with such fuel, then after a while it will really gain power and become more economical. But in no case is it better than the same engine, which was already clean.

Is it worth using 98 gasoline to make the car fly?

Even if you forget about the price difference, it’s still not worth it. Super gasolines have their own specific area of ​​application - these are highly accelerated, supercharged engines that require high detonation resistance of the fuel. And there is simply no need to pour such gasoline into a regular, ordinary engine. Moreover, with normal, standard adjustments, the consumption on the 98th will be higher, and in most cases you can lose in power. The fact is that the technology for producing 98 is often based on the use of a fairly large addition of high-octane components with low calorific value - which means that the overall “calorie content” of the fuel will decrease.

Is it possible to determine the lack of quality by the appearance of gasoline?

Not always. Normal factory gasoline, without excessive content of bad octane-boosting additives, is either practically colorless or has a faint yellowish or bluish color. But gasoline with a reddish tint should immediately alert you. This color is given by metal-containing additives based on ferrocene or manganese. In addition, the excessive content of octane-increasing additives based on monomethylaniline (MMA) in gasoline gives the gasoline a rich yellow color and a sharp, nauseating odor, which then causes headaches.

Do we sell imported gasoline?

Complex issue. Such things are usually not advertised. According to my information, Norwegian gasoline StatOil, as well as Neste 98, are imported to the North-West. But in any case, you need to understand that they will not make the machine faster or more economical. The more gasoline is “focused” on the environment, the less attention is paid to efficiency - the combination does not work.

Why is it necessary to separate gasoline according to European standards and classes?

There are no gasolines according to European specification standards in Russia and there never were. The “Euro” signs at some gas stations are PR. The seller wants to call his product a big name - and calls it names. Even Euro-7, or Pupkin Gasoline. Unfortunately, this is his right. But in fact, in the Russian Federation, fuels are divided only by class. These standards are similar to European ones, and yet they are slightly different. A detailed comparison of the two documents was in ZR, 2013, No. 6.

The vehicle description requires fuel according to EN 228. Where can I get it?

There is no answer to this question. From a formal point of view, “Mazda drivers”, “Volvolubs”, “naughty guys” and “Ford drivers” constantly violate the rules of operation of their cars by filling in fuel that does not formally comply with these same EN 228. We can only hope that our classes are no worse than their “Euro” ones. We write constantly about the reasons that a Russian cannot behave like a European. In fact, officials completely destroyed the fuel quality control system.

What to do if the environmental classes of the car and the fuel are different?

You can’t spoil the porridge with oil: using fuel of a higher class than specified in the PTS is absolutely safe. But reverse replacement is permissible only as a necessary measure. True, Nissan specialists believe that a few refuelings will not do any harm, but colleagues from the Dmitrovsky training ground shake their heads: they say, there is no need to play these games. VAZ workers say that their cars can be filled with gasoline from the 3rd to the 5th class.

Unfortunately, at many gas stations the class is not indicated at all. There is nothing written on the column, and not everyone wants to rummage through papers. And, in general, there is zero trust in these pieces of paper. To reassure yourself, you can look at the paid check – does it even say something like “Class-4”? Well, for complete reassurance, I will quote a famous St. Petersburg professor: “The engine quickly and confidently kills not someone else’s environmental class, but its composition. Which, by the way, is what distinguishes high-quality gasoline from nonsense, which is easy to play with.”

Advice for car owners

The simplest advice is this: refuel exclusively at branded gas stations - BP, Shell, Gazpromneft, Tatneft, Rosneft, Neste, Lukoil, etc. Bright signs, shops and other attributes of civilization. It happens, of course, that at the same Lukoil it suddenly turns out that it is not Lukoil, but it is unclear who, since the check is issued by some LLC or OJSC, but in general these are exceptions. Beware of gas stations that are painted “to match the brand” and are called almost the same - roughly speaking, not BP, but RV, or “Likoil”, not “Lukoil”. Never fill up with junk, the cost of which is several rubles lower than at the neighboring branded gas station. Once we bought such fuel for examination - the car stank through and through, and instead of 95, the canister contained disgusting 80...

Which gasoline is better to fill in a car: 92, 95 or 98

from Evgeniy 12/05/2017, 07:35 pm 22.5k P 56 G Comments

How true is the statement that 92nd gasoline is better than 95th? Is it possible to mix different types of fuel? Why do VAZ and Renault-Nissan recommendations indicate different brands of gasoline for the same engine? And what should you put in the tank to save money?

It’s amazing how many questions appear in the mind of a Russian car enthusiast when he once again thinks about rising fuel prices. Yes, life is getting more expensive, and I don’t want to switch to public transport, so the thought of the possible use of low-octane gasoline comes to us more and more often. So, what kind of gasoline should I fill in: 92 or 95? Content:

Octane number

To figure out which gasoline is better to put in your car: 92 or 95, you first need to understand what the octane number (OC) is and what it affects. Of course, seasoned drivers know this without any education, but it will be useful for beginners to read this.

Attention: octane number (another name is detonation resistance) is a parameter that determines the ability of the fuel to resist the process of self-ignition when compressed in the combustion chamber of the engine. This means that the higher the OC, the later the gasoline ignites and the more efficient its combustion.

In turn, any engine is designed for a certain compression ratio. For example, VAZ engines have a compression ratio of 9.0 or 9.9. The instructions for cars equipped with these engines indicate that the recommended grade of gasoline is 92nd grade. What does this mean? And the fact that in this power unit 92-grade gasoline will not be able to spontaneously ignite. It will ignite only from a spark when the car is completely ready for it.

If spontaneous combustion of gasoline occurs prematurely, this leads to overheating of the engine, accelerated wear and even some breakdowns. Therefore, manufacturers always indicate which brands of fuel are allowed to fill a particular car.

Is it possible to fill in 95 or 98 gasoline instead of 92?

What kind of gasoline should I put in a tank designed for grade 92?
Experts believe that it is acceptable to refuel with anything from 92 and above. Everything is logical: if we fill the tank with fuel with a higher octane number, we reduce the likelihood of detonation in the cylinder, and this is an undeniable plus for the engine. This reduces the risk of breakdown.

It is quite expected that on 95 or 98 gasoline the car will run smoother and be able to develop more power, because the fuel in the chamber will burn with greater efficiency. In this case, the car may normally begin to consume a little less fuel. However, you shouldn’t expect a significant difference in car behavior and gasoline costs. Moreover: if, for example, a car is designed for 92 gasoline with a compression ratio of up to 10.5, then the use of 95 grade may lead to some loss of power.

Many motorists are confident that using 95 and 98 gasoline instead of 92 will lead to burnout of the cylinders. Perhaps this was the case in older cars, since their engines did not know how to adjust to changes in octane number. Modern cars are equipped with special electronic units designed to adjust the engine operating mode in accordance with the quality of the fuel filled.

BUT: the electronic unit (ECU) has specific operating ranges, so it is better not to take risks and not “jump” over the brand. That is, if your car, according to its passport, runs on 92-octane gasoline, then you don’t need to fill it with 100% gasoline, 95 will be enough.

Is it possible to fill in 92nd gasoline instead of 95th?

What kind of gasoline should I put in my car if the instructions say 95, but I really want to save money? Alas, only the 95th. You don’t want to be denied warranty repairs if there’s a breakdown, do you?

As soon as you fill the car with fuel with a lower octane rating, it will begin to “be capricious”: make clicking sounds reminiscent of the knocking of valves. This indicates detonation processes occurring inside the engine. Another sign of detonation is when the engine continues to run after you have already turned off the ignition. You can't expect anything good in this case.

To avoid serious damage and expensive repairs, it is advisable to drain low-octane gasoline from the tank as soon as possible and fill the car with fuel that fully complies with the manufacturer’s recommendations. If a breakdown does occur, the service center will quickly understand what happened. In this case, you will have to carry out all repair work at your own expense.

If you have an ECU, the negative consequences are minimized, but then you will significantly lose power. Is there any point in such savings?!

Is it possible to mix 92 and 95 gasoline?

When choosing which gasoline is best to fill, some are forced to mix two brands at once. For example, add a canister of 92 to the rest of the 95th. What comes of this and is it possible to do this?

Some people believe that mixing two “different octane” grades will result in some kind of averaged type of gasoline. In practice, this is not so effective and no practical benefit can be obtained from such an experiment.

You need to understand that if, when mixing, you use gasoline with a lower octane number than prescribed in the instructions, then you at least risk increased engine wear (see the previous section).

Why octane number isn't everything

In principle, refueling a car is an extremely simple matter: go to a gas station; paid for the displacement at the required column; I waited until the ordered amount of fuel flowed into the tank and went about my business.

But... we are in Russia, where the quality of fuel often leaves much to be desired. Even if you know exactly what kind of gasoline you need to put in your car, you are not immune from purchasing fuel of lower quality. For a long time it was even believed that 92nd gasoline was much better than 95th. There was an opinion that 95 was greatly diluted in our country, so it would be cheaper and more correct to refuel with 92. Now the quality of fuel in large cities more or less corresponds to the declared characteristics, although there is still a risk of running into an unscrupulous seller.

You've probably come across gas stations that sell AI-100. Some people avoid such places, others buy exorbitant prices for “one hundred” because it’s supposedly cool. In reality, they, as a rule, pay through the nose for the most ordinary 98 gasoline, just slightly “overclocked.”

And the secret is this. Many people don’t even realize that fuel quality is determined not by one, but by two indicators:

1. ER by research method;
2. OC according to the motor method.

The first indicator is the same octane number that is displayed in the name of the gasoline brand. It is determined when testing at low speeds. The second indicator was obtained at higher speeds. Even though it is not included in the brand name, it is of great importance.

So: if you ask for information on that same AI-100, with a high degree of probability it will turn out that the engine rating does not exceed 88. This means that you are buying regular 98-grade gasoline, but at a bad price. Well, which gasoline is better to fill: AI-100 with engine number 88 or AI-98 with engine number 90? Yes, yes, the latter can be found, you just need to look hard enough.

It is also important to properly understand the relationship between octane number and vehicle power. Many people think that if they fill their Lada with 98-octane gasoline, their “swallow” will fly like an arrow. In fact, the situation is this: a more powerful car requires fuel with a higher octane number, but high-octane gasoline itself will not turn the Oka into a Ferrari.

So, what kind of gasoline is better to put in the tank?

We have become familiar with the positive and negative consequences that arise when refueling a car with non-original gasoline. It is believed that all modern cars require gasoline not lower than AI-95, however, with a compression ratio of up to 10, AI-92 is often recommended.

Manufacturers always indicate in the accompanying documents which gasoline is best to fill in a particular car. Ideally, you should strictly follow these recommendations. Manufacturers often indicate not one, but two acceptable grades of fuel. This means that you can refuel your car with any approved brand with equal success. However, given that there is a risk of purchasing low-quality gasoline, it is better to use fuel with a higher octane number.

What to do if manufacturers do not have a common opinion on the brand of gasoline?

So, to understand what gasoline to put in the tank of your iron horse, just open the documents and find fuel recommendations there. By the way, this information is usually also on the fuel filler flap.

But what if two factories recommend different gasoline for the same engine? You don't have to look far for an example. Our dear Priors, Kalinas and Grants, equipped with a VAZ-21127 engine, according to the factory’s recommendation, should run exclusively on 95-octane gasoline. The same engine, which in Vesta and XRAY bears the VAZ-21129 index, is ready to eat the 92nd brand. Why does this happen?

It must be said that such inconsistency is typical for many alliances. It's just that different engineers look at fuel differently. For example, at VAZ, experts think like this: “95 gasoline is more environmentally friendly. The whole world is switching to more environmentally friendly fuels, so we are definitely on the right track. In addition, if 92 is poured into the tank under the guise of 95, the car will practically not notice it. It’s another matter if we write 92nd in the documentation, and instead slip the driver 80th, then it will be bad...”

Conclusion

Using 95 gasoline instead of 92 has become normal today, because in Europe 92 is a thing of the past, and our country is not far from this. Modern cars all require fuel of grade 95 and above. In extreme cases, the plant indicates a range from 92 to 95.

So, you decide for yourself which gasoline is best to put into the tank of your car. After all, in case of an error, all responsibility falls solely on you. But the best thing to do would be to follow the manufacturer’s recommendations and refuel only at proven gas stations.

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