The choice between A95 and A92 gasoline is a fairly common problem for motorists. It is connected with the quality of fuel and constant rise in prices. Since the difference in price is about 5-10%, when refueling A92, a significant difference is obtained.
But, making such a decision, it is worth studying the advantages and disadvantages, paying attention to the possible consequences.
Each vehicle's owner's manual contains recommendations for refueling with a particular type of fuel. They must be observed, especially when the car is under warranty. Since the development of problems associated with poor fuel quality will lead to costly restoration at the expense of the owner.
To figure out which gasoline to pour 92 or 95, you need to understand what the numbers mean and how they affect the properties of the working fluid. 92, 95 are octane numbers that determine the detonation resistance of the fuel. An increase in the index is accompanied by a decrease in the probability of self-ignition during compression. To determine the characteristics, special studies are carried out.
Research results:
- ROI - research octane number, which allows you to understand how the fuel will work at minimum and medium loads;
- MON is a motor number, which is determined at increased loads, respectively, displays the permissible level of loads in harsh conditions, when driving uphill (this number is lower than RON and for the 92nd it is 92, and for the 95th - 95).
When choosing gasoline, it is worth considering and important points production:
- As a result of direct distillation of oil, a working substance with rather low properties is obtained, where the OC varies between 42 - 58.
- To obtain the desired performance, a hydrocracking system is used when special additives are added to improve the performance of the composition.
There is another technique where the product is obtained immediately with the desired characteristics. This is a catalytic reformer system, but it involves higher costs and higher fuel costs. Therefore, the scheme is used in the West, we produce only a small part of the products in this way.
When thinking about which gasoline is better than 92 or 95, it is worth considering the opinions of experts and the design features of the machine and engine. Paying attention to the octane number, you can see that the difference is very small.
How the car behaves when refueling A92:
- with a significant increase in speed, the quality of movement decreases;
- fuel consumption will increase slightly;
- power will drop.
When choosing A95:
- dynamic performance is improved - it will take 1 second less to accelerate to 100 km per hour;
- fuel consumption will practically not change;
- the car moves smoother and more confidently;
The disadvantage of the 95th fuel is the accelerated wear of spark plugs, which is determined by the increased content of additives. The disadvantage of the 92nd is the likelihood of detonation, since the octane number is lower. It should be noted here that the new power plants are designed with a knock sensor in mind to eliminate unpleasant situations.
What happens when refueling A92 instead of A95
Each engine is designed to run on a specific fuel as it is calibrated. The change in fuel is especially acute on new cars, where the manufacturer increases the compression ratio in the cylinders to increase potential and reduce consumption.
When refueling with lower quality fuel, you should expect:
- Self-ignition when driving at high loads.
- Mini-explosions are dangerous by the destruction of rings, pistons, gaskets burn out.
But this is only a theoretical side, since cars are equipped with a knock sensor. After all, automakers are aware of the quality of fuel, and that it is difficult to find good fuel outside of Europe. The action of the knock sensors allows the use of fuel with a lower octane without harm to the engine.
Therefore, when doubts arise whether it is possible to fill in 92 gasoline instead of 95, the answer will be yes.
Since the controller constantly monitors mechanical vibrations power plant by sending appropriate signals to the ECU. When the readings exceed the norm, the ignition angle is corrected. But for cars with a carburetor, changing fuel must be accompanied by setting the appropriate angle by experimentation. Automatic adjustment is assumed only for the injector.
Important:
The knock sensor is effective at light and medium loads. At maximum power, performance decreases, which is accompanied by an increase in danger. Therefore, when refueling the 92, you need to adhere to a moderate driving style.
Different octane number is the main answer to the question of how 92 gasoline differs from 95. The required performance is achieved by adding additives.
What additives are used:
- Substances where metal-containing products act as the basis. Among them is tetraethyl lead, which is dangerous for the motor and exhaust system. During combustion, compounds are formed that lead to the rapid failure of the catalyst, oxygen sensor. Such fuel is considered obsolete, although it ensures the most efficient operation of the unit.
- Additives based on monomethylaniline, nickel, manganese. They are considered safer, more environmentally friendly, and have a high OC. Mixing with the products of oil distillation, they allow to obtain the desired indicators. However, during operation, they form plaque on the elements of the motor and exhaust system, which leads to blockage.
- Esters and alcohols are the most perfect additives, although they do not have a high enough OC. They are also quite aggressive, so their content is limited to 15%.
When choosing the right fuel, it is important to follow the vehicle manufacturer's instructions. This affects the efficiency of the entire system. The environmental indicator is also important. If the engine is designed in accordance with Euro 2 standards, the use of more environmentally friendly fuel is not advisable and will not bring the desired result. But refueling a modern engine with low-quality fuel will lead to failure.
If the question arises - is it possible to mix gasoline 95 and 92, you should pay attention to the different density and octane number. As a result of mixing, fuel with a lower density, that is, A92, will go down, at the same time, A95 will go up. Therefore, there will be no noticeable improvement in dynamics, this also applies to savings.
Which gas stations should you fill up at?
Choosing a good gas station ensures the use of quality fuel that will not harm the car and will meet the manufacturer's requirements. Thinking about which gas stations have the highest quality gasoline, it is worth considering the selection criteria.
What to look for:
- Gasoline quality. It is determined not only by the composition of the fuel, but also by the conditions of storage and transportation. The work of employees is also important, which must exclude contamination of the product.
- Price is an important factor, where underestimated or overestimated indicators are alarming. Too low cost is usually associated with quality. Overestimation is often accompanied by an offer of better quality fuel. But in practice, only a small part of such fuel corresponds to the declared characteristics.
- Compliance with GOST or TU. Information about gasoline can be clarified at the gas station. If a refusal is received, it is worth thinking about the quality of the products offered.
- Service, additional services, promotions, bonuses - facts that attract customers. Combined with good fuel, this increases the rating of gas stations.
Among the gas stations offering good fuel, stand out:
- Tatneft, where strict control of the products offered is ensured.
- Phaeton - the quality of fuel may differ depending on the batch, but remains at its best.
- Sibneft - offers excellent fuel and good service.
- TNK - pleases with good service and high quality fuel, where 35% corresponds to Euro 5.
- Shell is an international network where you can fill up with eco-friendly, high-performance fuel that fully justifies its price.
Other noteworthy networks include Gazprom Neft and Lukoil.
The quality of the products offered at different gas stations may vary, but following the selection criteria, you can always identify a good gas station.
The question of which gasoline is better to refuel with 92 or 95 does not look either rhetorical or inappropriate for the average domestic car owner. Of course, the quality of gasoline at Russian gas stations still leaves much to be desired, especially in the outback, where control is minimal, and as a result, anything can be mixed into the fuel (and then you clean my gas tank and clean the engine). But the problem with full and high-quality refueling of the car is not limited to this.
Some have rather old cars with mileage, others have brand new cars, just from the salon. Accordingly, the engines differ in nutritional preferences. And if everything is more or less clear with zero cars: fill in what is recommended by the manufacturer in the technical support, and the engine will live happily ever after, then with used cars, not everything is so simple.
Firstly, in older cars, the so-called books with technical recommendations may simply be absent, and secondly, the previous owner could have reconstructed the engine or adapted it for another type of fuel. No matter how much damage to the engine that has already passed more than tens of thousands of kilometers!
Which gasoline is better to refuel 92 or 95, of course, every motorist decides for himself. Some people try to save money by filling in the cheaper 92nd, and some even manage to mix different kinds fuel or add additives offered in a wide range by various manufacturers, promising almost the eighth wonder of the world that should happen to your engine when they are added.
By the way, according to real experts, 80 percent of newfangled products are advertising stunts and can even harm if used ineptly. So even an experienced motorist should be as careful as possible with this. And, besides, after all, it is necessary to know the main differences between 92 and 95, so that you do not have to unscheduledly repair the motor unit.
Main differences
These two are the most popular brands are of course different from each other. Well, first of all, the octane number. But don't think badly of '92, because some drivers think that '95 is of higher quality than '92 and won't be able to hit your engine on the sly. But it is not so. On the contrary, higher gasoline is usually made on the basis of a lower one by adding various additives to it that increase the octane number. That is why 92nd gasoline is considered by experts to be cleaner than its highest relatives (95th and 98th).
Roughly speaking, it's cleaner because there are fewer additives (although some gas stations do sell 92 made by additives). And bringing up to the level of the 95th tankers is cheaper than buying the corresponding product directly from the factory. So they mix it up, increasing the octane number. Moreover, this homemade product can be very dangerous for the engine and lead to its premature exit out of service.
If the 95th is intended for the engine according to the passport, then some strive to fill in the 92nd or a mixture of these two types in order to save money. In this case, over time, a problem arises for the motor, and already for purely physical reasons. According to the laws of this science of physics, the higher the octane number, the lower the temperature at which gasoline burns. And when using low-octane gasoline as fuel, the opposite happens. The temperature regime rises to indicators unplanned by the manufacturer.
This leads to the fact that some spare parts can simply burn out, because they are not designed for such executions (especially if refueling with reduced gasoline occurs more or less regularly). And then an unscheduled - partial or complete - repair of the engine is provided after a certain, not too long, time. So in cars that are clearly intended for the 95th and above, the use of the 92nd type of fuel is not categorically recommended. This is fraught, be careful and attentive.
What if you mix?
It is also impossible to interfere, according to experts, the 92nd and 95th, since they do not even completely mix in the tank. With a mix of 95 + 92, as many believe, there is a saving in price. But you can also cause some damage to your engine, designed for 95th and higher. This will happen because these two gasolines have different densities. If you fill them in a ratio of 50 to 50, then 92 will sink to the bottom of the tank, and 95 will rise up. That way you'll use one first, then the other - they almost won't mix! And again, we return to the above about the harm of the 92nd.
But if your car is designed for 92 and above, then, as experts say, you can pour 95 into the tank with peace of mind. This will not harm the engine, and perhaps even improve throttle response and speed. At least you will feel more confident when overtaking!
In my previous article and video about octane and compression ratio (by the way, I recommend that you watch the video below), many people began to ask me an interesting question - “what kind of gasoline burns faster? Say 92 or 95?” There were also not so common options - “which is longer” or “better”. Personally, they seemed interesting to me, and I decided to think about it in detail. As usual, there will be a video version at the end. So let's read and watch...
At the very beginning, I would like to say - that not always the rapid burning of gasoline speaks of its quality! Now it’s rather the opposite, but I won’t reveal the cards right away, read the information below.
normal ignition front
Any gasoline, for any type of fuel, has its own normal ignition front. It usually ranges from 10 to 30 m/s. With properly selected fuel, the full potential of mechanical and thermal energy is used to the maximum, the internal combustion engine can be said to work with and its resource is not reduced.
The ignition front depends on various parameters, such as: - octane number (OC), compression ratio, ignition (now it can be electronic or analog), fuel supply ().
Ideally, for each engine design, the recommended fuel is selected. This was especially true on analog carburetor engines (after all, there the ignition could not automatically adjust), unlike modern “injector” units, where the electronics themselves can deduce everything based on various sensors (detonation, lambda probes, etc.)
Destructive ignition
I already talked about it, it's still. If any of the parameters is not correctly selected, for example, the engine is designed for the 95th gasoline, and you filled in the 80th. Electronics, namely the "knock sensor" will no longer be able to cope with the destructive processes inside.
During detonation processes, the flame propagation front is about 2000 m / s, which is a lot, such loads simply destroy the internal combustion engine from the inside
This is very bad. In our case, we have the wrong fuel. It's just that 80th gasoline will ignite faster from compression than 95th.
What is modern gasoline?
Modern types of gasoline are made using other technologies, and they are not the same as they were before. Previously, 30-50 years ago, the only type of production was only one - the direct distillation method. If you walk, this is something reminiscent of a moonshine still, only instead of "mash", crude oil was poured in and light fractions came out first - namely gasoline. Then kerosene and the heaviest fraction -.
This method has long been abandoned, the thing is that with such production, the octane number was only 50 - 60 units. You need to add a lot of additives to bring the final product to the desired octane, at least up to AI 76 - 80! YES and additives used to be used on tetraethyl lead etc. they are very effective but very harmful to humans and the environment.
Now everything has changed, the direct distillation method is practically not used, refineries are being updated, and now the main method is various kinds of cracking - thermal, catalytic, etc. (we will not go deep, I already have an article - for those who are interested, read it).
Here the essence is a little different here, oil is laid out with the help of pressure, temperatures, as it were, into layers, and the topmost layer - gasoline - is drained. There are many advantages to these methods:
- This is a larger OC - approximately 80 - 85 units. And ideally, you need to get rid of additives altogether
- More gasoline per liter of oil
BUT 80 - 85 units for a modern motor is VERY SMALL! Need at least .
BUT the additives that were used before are NOW FORBIDDEN! Again, if you don't go too far currently only ETHERS and ALCOHOLS are allowed . It is they who practically do not harm the environment and humans (such norms are recommended to us through the EURO standards).
BUT alcohols and ethers, having a high OC (approximately 113 - 130), do not burn as fast as we would like! Here we come to the most interesting
What determines the burning rate of gasoline?
We think logically - it is additives, the more of them in gasoline, the slower, but longer the final product burns!
In simple words, if you take 92nd it ignites faster but burns out quickly . Its ignition is similar to a flash.
If you take 95th it ignites slower but burns longer .
98 ignites even slower but burns even longer
ou and s 100th you got me .
How is more power and fuel economy achieved with high octane gasolines?
YES, everything is simple - the longer gasoline burns, the longer it pushes the piston, here you are - saving fuel and increasing power. That is, the 92nd burns out faster, pushes the piston less. 95 burns slower, pushes longer. 98 is even longer, and so on.
Of course, you should not expect a GLOBAL increase in power, here it is most likely a matter of an error of 2 - 5%. Which you may not feel. After all, the octane number directly depends on the amount of additives added to gasoline, but the difference between 92 and 95 is only 3%! Do you think it's a lot or a little?
Now watch the video version
Hello everyone, today in the heading "What is better?" we'll talk about the sore, namely, that which gasoline is better pour into the A-95 or A-92 tank. In the article, we will weigh all the pros and cons of each of the applicants and summarize so that you can make right choice fuel for your car. It would seem that everything is very simple to pour what is better (according to the majority), what is more expensive or what was indicated in technical specifications car manufacturer. In principle, this is exactly what everyone is doing all over the world, however, in our country, it is not always possible to believe what is written, therefore, it is not always the same 95th gasoline recommended by the manufacturer that is hidden under the AI-95 brand. Given this fact, it is not surprising that many motorists do not want to overpay for imaginary quality. And if, moreover, we are talking about gas stations on the outskirts, where there is no quality control as such, instead of the same 92nd you can pour in anything you like and then it will be very difficult for you to prove anything. Everyone “badyazhat”, the only question is how much, and this already depends on the presence of conscience in the same owner of the gas station or lack of it. Although what conscience can there be in the matter of "swindle"? Everyone probably knows what happens after you pour poor quality gasoline into your tank, the result depends on many factors. Firstly, how much of this gasoline will you fill up, secondly, how long will you fill up with this fuel, and thirdly, what type of engine do you have. One thing is for sure, that in any case, nothing good awaits you with such fuel.
Which gasoline is better everyone decides for himself guided by some of his knowledge, 92 or 95 or possibly 95 with the prefix "Energy", "Pulse", "Mustang", etc. Therefore, my today's article is nothing more than a discussion on the topic, rather than what There are clear instructions that must be followed. After walking around the forums and listening to real people who give advice based on my own experience, I have my own opinion and view on the question "Which gasoline is better 92 or 95 If you're interested, then keep reading... If not, thanks for stopping by!
I will say right away that you should not go for the above English-language consoles, in most cases this is just a marketing ploy for those who believe that after refueling their Zhiguli it will drive like a Mustang. Although there are also such gas stations where "fashionable" gasoline, let's call it that, justifies its name, after refueling such fuel, the car drives better and faster. But what is good for one motor is not always good for another. Therefore, the high octane number of "fashionable" gasoline in some cases can do more harm than "diluted" 92nd.
The main differences between the 92nd and the 95th
These two brands of gasoline are most in demand by motorists, they certainly differ from each other, otherwise why would they be divided into two classes.
The first difference is the octane number. At 92, this number will be lower, but this does not mean that the quality of gasoline will be the same. The quality will just be normal, since the 92nd among experts is considered to be cleaner compared to the 95th. The latter, by the way, if anyone did not know, is made from the 92nd by adding various additives and additives that increase the octane number, this method is considered legal when oil refineries do it. Although there are often cases when gas station operators or even their owners who are not clean at hand perform this operation themselves, thereby "inflating" the consumer. The quality of such a 95 leaves much to be desired, but it is financially beneficial for the gas stations themselves.
It is certainly necessary to adhere to the recommendations that the manufacturer of your car indicated in the instruction manual, but not everyone has this manual, this is especially true for used cars that are more than 10-15 years old. In addition, as we have already said, if the 95th is recommended to you, but you see and hear that the car drives better on the 92nd, besides, if we take into account the fact that fuel is “diluted” at gas stations, then I think that in this situation you can deviate from the rules.
If you are pursuing another goal, for example, and fill in the 92nd knowing that the manufacturer of your car has clearly indicated that you need to fill up the 95th only because it is cheaper, then you should think about this. The fact is that the higher the octane number, the lower the ignition temperature of gasoline. Therefore, when refueling the 92nd, you may not suspect it yourself, increasing the ignition temperature of the fuel, which in itself is not good, because parts that are temperature-dependent (pistons, valves, gaskets, seals) can fail from a higher temperature regime etc.). I don’t think anything will happen from one or two gas stations, but if it becomes a habit and you deliberately pour 92 for yourself, then whatever unscheduled or its individual parts you are guaranteed. That is why if your car is provided with the 95th, pouring the 92nd into the tank is strongly not recommended, at least when it comes to regular refueling.
What happens if you mix 92-1 and 95th gasoline?
According to socialists and motorists, it is impossible to mix the two types of fuel AI-92 and AI-95 because, despite the fact that both types of fuel belong to the same class in the tank, they almost do not mix with each other. Such a "mix", according to some convinced "carriers", allows you to save on fuel, but this is not so. "Mixing" two types of fuel can harm the engine, since each fuel has its own density, and in the case of refueling in a ratio of one to one, AI-92 will sink to the bottom of the tank, and the 95th will rise up. Ultimately, your engine will run on 92 first, and then on 95, so you will get the above effect when you drive 92, even though the manufacturer clearly instructed you to use 95.
If the engine of your car should consume the 92nd or higher, then in principle you can pour the 5th gasoline without much harm, because of this you should not suffer too much, moreover, according to minders and experienced motorists, traction and engine operation improve .
Summing up
If you don't know which gasoline is better 92nd or 95th, fill in the tank with what the automaker recommends, but if the manufacturer indicated that you can use AI-95 or AI-92 - do as you wish, pour what you like best from a financial point of view.
If you are faced with the fact that you have zero fuel, and there is only the 92nd nearby, but only the 95th is suitable for you, then it is better not to risk it, except in case of emergency.
If you fill up with 92 all the time, but there is no such gasoline at the gas station, you can safely pour 95, there will be no harm from such a one-time refueling. If you liked the performance of the engine and the dynamics of the car while driving the 95th, in other words, you are thinking about switching to new gasoline with a higher octane rating, check with your car manufacturer's dealer or at least minders. Be careful and careful, because in some cases, the 95th filled instead of the 2nd leads to a malfunction of the engine, valves appear.
That's all for me, I hope I answered your questions, and now you know for sure the answer to the questions which gasoline is better 92 or 95 and is it possible to mix fuel of different grades. Thanks to those who mastered the article to the end, and even more thanks to those who supplemented me or liked it using the buttons below. Peace to all, and see you at.
To understand which gasoline is better to fill in our car: 92nd or 95th and whether it is possible to fill in 92 gasoline instead of 95 and vice versa, let's decide how exactly the octane number of gasoline affects the operation of the engine internal combustion.
Many drivers are used to believing that the higher the octane rating of the fuel, the better and hotter, in simple terms. 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 at higher compression. 92 gasoline can withstand less compression before it ignites, and 95 more; so the 95 petrol will explode at more pressure and 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 lower 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 gasoline is recommended to be filled by the manufacturer and find out point by point whether or not this or that gasoline can be filled in certain cases.
For many cars (more precisely, the designs and engine models 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 fill in this case: 92 or 95? Here the answer is simple - 95. High performance means high power, and this is not necessarily the goal of getting faster acceleration or higher speed. No, on the contrary, maintaining the same dynamics in driving style, 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 by low fuel consumption (although, of course, not as much as diesel fuel does).
However, many motorists deliberately choose 92 gasoline instead of 95, arguing that 95 gasoline is just the use of additives. But here it is necessary to recognize the fact that additives in themselves are not harmful to the motor - after all, it is they that give the desired increase in deformation before ignition. It is harmful to use precisely certain additives that are used on some low-quality gas stations. Therefore, here you need to be more careful about the choice of gas stations and refuel only at one specific gas station. You will most likely feel the quality of the gasoline in the car's dynamics and engine sound.
However, there is nothing wrong with using 92 gasoline when the manufacturer makes both 92 and 95 possible. Most modern engines can automatically regulate and adjust the engine ignition timing if low-octane gasoline starts to detonate - in all modern motors there is a special knock sensor, and if it detects one, then the ignition timing decreases towards more early ignition, as a result of which the operation of the engine becomes stable again.
As we have already learned, the fuel in the engine is ignited by the spark plug in perfect timing in a four-stroke cycle, resulting in 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 can hear a distinct knock - it is called " detonation in the engine". The sound comes from uneven combustion. In worst cases fuel will not burn completely and even burn out further in exhaust system- in 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 for 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 your car engine is designed for 95, leads on the contrary, because gasoline burns rather inefficiently. But you are more likely to notice a loss of power in conditions of a harder ride (on the highway).
Moreover, if you regularly fill in 92 gasoline instead of 95, in the end this can lead to premature engine wear, premature replacement of the catalytic converter.
Thus, answering the question, is it possible to fill in 92 gasoline, if 95 is recommended for the car, the answer is: yes, you can. But only in rare cases and with the condition that you return to refueling 95 gasoline as soon as possible.
If you fill in 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 to effectively burn a different octane number due to its ignition timing, so again there is increased consumption fuel and power reduction.
In addition, 95 gasoline generates 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 candles, less often valves, and much less often pistons. But then again, nothing terrible, most likely, will not happen if you fill in 95 gasoline instead of 92 once - just dilute it with the recommended one in the highest possible concentration as soon as possible.