Theoretically, the correct answer to the question of the preferred engine of the octane number is given by the instruction manual of the machine. However, sometimes this information can be in a dead end. Renault-Nissan concern cars are one of these examples. Often, for the same motor installed on different machines, gasoline with a different octane number is recommended. What is the case?
For example, a K4M engine designed by the Alliance is installed on Almera, Logan, Sandero and Largus. At the same time, for the first three models, the manufacturer allows the use of AI-92, and for the latter only AI-95 is prescribed. Let's say more: the instructions for Renault indicate that the motor can operate on 87th gasoline, but only a short period of time. Such a variety, of course, is not for sale in Russia, but it will give the engine to "digest" the bad 92nd.
In fact, the requirement for using AI-95 is understandable. It has been scientifically proven that high-octane fuels makes it possible to achieve the best parameterity, efficiency and environmentalities. Moreover, it is a kind of safety netting from the use of poor-quality fuel. If you make a dubious refueling from the gun with the labeling "95", then the 92nd gasoline can get into the tank. And the engine will cope with it. But what will be in the tank, if you pay gasoline AI-92? It is possible that the 80th or even the 76th. But this will already cause certain problems.
The situation absurdity adds the following observation: cars are more expensive, including many Nissan models, 92nd gasoline is allowed, but only AI-95 is recommended by budget models.
What is refueling
Excellent, the gas stations were determined. Now let's choose a gasoline brand, which we will use. On most gas stations there are three options - AI-92, 95 and 98.
It is the opinion that the best of all is filled with 92nd. Allegedly it contains less additives, impurities, so fuel is cleaner and does not form a car on candles. An alternative in the form of 95th gasoline is rejected with arguments that candles blush from it and other unpleasant consequences occur.
It could be true if not one important fact. Numerous measurements of the octane number of fuel on the Russian gas stations revealed that under the guise of the 92th often sell, attention, 80th gasoline. And such a picture is observed in all regions of the country, even in those where millionic cities are located. It turns out that the declared gasoline brand does not always correspond to the real one.
Now we will go to the Luchku Benzobakka and open it. If the manufacturer indicates that it is necessary to pour AI-95, do not risk - it's better just follow the instructions. An attempt to save on fuel can lead to expensive repairs, even though the designers laid the possibility of working on another fuel. Do you remember that gasoline with a smaller octane number is most often pouring with a labeling of "92"?
The same, who under the taste is written that it is possible to refill the 92nd and 95th, they will have to decide. If you are confident as a fuel at the gas stations you have chosen, feel free to follow this recommendation. At the same time, if you use gasoline AI-95, nothing terrible will happen. Even on the contrary, you will notice the flow rate, an increase in the dynamic characteristics of the engine, reducing the wear of parts. If your mileage is 12 thousand km per year, then for 365 days of operation on fuel with an increased octane number you overpay about 3000 rubles.
Many have a question: "Or maybe gasoline AI-98, so that the car is still better?" There is no answer. The transition to such fuel will bring more harm than good. The fact is that such gasoline is used on sports and forced engines with a high degree of compression. For serial cars Nissan is an inappropriate choice.
However, do not forget about AI-98. If you suddenly fall poor-quality gasoline, which killed the car dynamics, fill in the 5-10 liters of the 98th. The octane number is leveled and you will be able to get to a hundred, where they will conduct diagnostics and the necessary maintenance of the fuel system.
Low-fledged or high octane?
Personally, I never had such a question. And not at all because in the past times it was not necessary to choose. Then the people argued except that how it is better to go from the 93rd to the 76th, which some kind of good people were sold to other good people for half a favor, and even cheaper. Unfortunately, when you can fill the tank for a third, or even for a quarter of the price from the state, then all technical arguments are cowardly going to the side.
The solutions were many. Some then set an additional gasket into the head of the cylinder block, the other changed the rigidity of the spring spring, the third simply moved to later ignition, and the lazy did not change anything at all. But the doubt is that in the native 93rd gasoline "Zhigul" still goes much better than the low-octane caught, no one had. However, what you won't go for substantial savings?
It is curious that today different gasoline is fully, but the disputes did not stop at all. The difference in the claimed octane numbers between the 92nd and not so big, but the topic does not die. Reasons for praising lower octane - two: all the same desire to save, as well as fear of running on the drained quality of high-octane fuel. The latter circumstance was once generated by rumors that the 95th, they say, "beyond" stronger, but the 92nd make "right." Well, the first, about the cost, alive and today - they say, we are not so rich ... and so on.
Generally speaking, in Europe 92th no longer. But we are not Europe. And any search site is still exploded by hundreds of publications in response to the tsiferki 92 or 95. Well, I will express my personal opinion for the hundredth time. And I apologize to those who do not like it.
About. We specifically bring two photos from gas stations - one modern, other six-year old. The cost of liter of the 92nd and 95th was, respectively, 33-70 and 36-70, and earlier - 24-70 and 26-70.
The absolute difference in the price of the liter was 2 rubles, it became 3 (however, somewhere slightly higher). And how much do this delta can be saved at refueling? One hundred rubles? Against the background of the current value of the tank, it seems to me a frivolous reason for anxiety. And for those who are going to prove that it is a hundred rubles - they say, money, sincerely I advise. I promise you a much more significant financial gain - wrote about it more than once. The same car can "eat" and 7 liters per hundred, and all 15.
Now on the technique. Any motor is calibrated under a certain gasoline variety is a fact. And if the manufacturer wrote: they say, to upload only the 95th, and - neither step aside, then he should be placed. Even if you hold a combination of three fingers in your pocket. On low-fucked gasoline, the machine will go worse (and how can it be otherwise?), But the point is not even in this. Imagine a bad case: there was a problem with the engine, and you came to the service. And there the funny guys first will take a sample of fuel from the tank. And if at least something "not from that opera" will be found, you can forget about any. You need it?
Of course, this is an extreme case. Most modern engines designed under 95th gasoline are swallowed without any problems and 92nd. But I still urge to pour exclusively that gasoline, which is listed in the instructions for your car. If the scatter is specified - another thing: Choose yourself. But if it is not, do not spend laboratory work on your own car. Just post her. Yes, and at the same time.
By the way, all automakers have recently chuckled a little, having started agitation for the 98th gasoline. Say, do not pour down the low-octane 95th, whatever it is written in the instructions. Only 98th in all cars without exception! On this occasion, I have already expressed, and more than once, but the tendency is understandable: you give a high octane! And therefore I repeat once again: in the choice between the 92nd and 95th, I always for the 95th.
However, there are fun and in the fatherland. An interesting observation was recently my former colleague Vadim Crochekov. He was interested in the question of which fuel should be poured into the Vazovski cars - here it is here. It turned out that on a vase and Renault-Nissan there is no single approach: the same engine installed on different models, prescribe different grades of fuel.
Quote Vadim. "For Vesti and Xray with the Motor VAZ-21129, A-92 is allowed, and similar motors on the prior, Kalina and grant under the VAZ-21127 index are prescribed only A-95. Or, let's say, the eight-point VAZ-11189 for Largus officially swallows the 92nd, and the same Motor Kalina VAZ-11186 give only the 95th. " And here's another: "Why a 16-valve Motor K4M developing an alliance under the hood Lada Largus requires A-95, and in Almers, Logan and Sandero can work on A-91? Moreover, Renault even admits short-term operation on gasoline with octane number 87 by research method. There is no such variety in Russia, but the tank can get the poor-quality 92th, with which the motor can somehow cope. "
In short, the engineers did not agree with each other, in which saint must be ordinous. Previously, a certain unity of views reigned on the same vase: they say, 95 - and that's it. Arguments Simple: At the same time, we promise you environmental friendliness plus economy plus pickupness, etc. There was a spare argument: this is the so-called technological stock laid by the designer on any "if"! In other words, if somewhere, "not in our area", as Comrade Sahaov, you still nalled the 95th, and something worse, then nothing happens to your engine. But as soon as we allow the 92nd, then we will take responsibility for any 87th ... and who needs it?
Today, it seems to me, developing engines under 92th does not make sense. If only because, as I said, there are no more such tsiferok in Europe. The lower modern limit is the 95th. As for modern and previously released cars, I repeat again: I - for the 95th.
Even if the automaker allows the variation of octane.
What gasoline is better - 92nd or 95th?
Is it true that 92th gasoline is better than 95th? Or is it worse? What ultimately need to pour into the tank? And why on a vase and Renault-Nissan recommend different grades of fuel for the same motors?
What gasoline is better - 92nd or 95th?Nicholas_1811
A week ago, I became the happy owner of the churlin on the MR20DD engine and immediately there was a question of which gasoline eats this new miracle of technology. In the cabin, all in one voice scream "only 95", but what a moral problem works: I live in St. Petersburg, and we have 95 - it's 92 + chemistry bucket (I myself did not check, but there is such an opinion), and the most incomprehensible that in The instruction manual is written "Use non-ethyded gasoline with an octane number on a research method (Ron) at least 91" and on the lid of the gas tank, where they usually write "95 !!!" Nothing is written. With the MR20DE engine, more or less understandable, distributed injection, lei that the soul will ask, and here it seems to be directly if I'm not mistaken. In short, the question is: who is on what gasoline rides and why?
Lew 92 gasoline, although in our Kirisha and the 95th good, but I see no reason to overpay. It is written in the manual not lower than 91 and what the head is score.
And managers in the salons of alas very often do not even know what is written in the instructions for the car sold. For example, I assured that on T32 (LE +) there is no rear camera washer and that the hatch opens only into one position.
18.6.2015, 10:06
Lew 92 Kirishi. Mileage 157,000 km no questions.
28.6.2015, 23:54
With the MR20DE engine, more or less understandable, distributed injection, lei that the soul will ask, and here it seems to be directly if I'm not mistaken. In short, the question is: who is on what gasoline rides and why?
Well, MR20DD, too, the engine is low-affected, like DE.
I will look for info. Before buying ICA, I specifically searched for info by DE. In the network information a lot. For example, on what models it is still worth and what about gasoline for this model is written on American sites.
And on what these engines in Japan travel. In Japan there are 91st gasoline. Called "regular".
I have DE - 70000 was a month ago, there are also relatives of relatives (with a conveyor stand).
And managers in the salons of alas very often do not even know what is written in the instructions for the car sold.
And about gasoline once in Toyota Meganer CZHOG. On the question why the OD argues that only the 95th is needed, although in the USA these motors work without problems at 92nd. He issued: and in the states octane number 92, as we have 95. I could not restrain - laughed long and loudly.
29.6.2015, 10:29
And about gasoline once in Toyota Meganer CZHOG. On the question why the OD argues that only the 95th is needed, although in the USA these motors work without problems at 92nd. He issued: and in the states octane number 92, as we have 95. I could not restrain - laughed long and loudly.
29.6.2015, 13:44
It is a pity, of course, that the 80i76 was removed from the dressing, so it was possible to pour it, laughing in the face of managra
Honestly, I did not look at SPB gas stations, but I am so free and officially sold AI-80.
29.6.2015, 15:55
29.6.2015, 17:27
In the instructions for T31 it is written that gasoline should be with an octane number of at least 91, but the machine provides its maximum dynamic characteristics only on gasoline 95. Approximately so. You can see more accurate wording.
29.6.2015, 19:00
And there is. But I still have some doubt that the instruction is written, taking into account the Russian features of octane.
The instruction is written in Russian. And the instruction is official. The reasons do not believe it seems to be no.
29.6.2015, 19:16
Stich,
someone believes instructions
someone information that if the degree of compression is less than 10, then the 92nd doctor himself prescribed,
someone frozen that the flow is the same, and the dynamics is the same.
The engine of ICA is not particularly capricious, which poured into the tank, it digested.
That is why half goes on 92nd, the other is 95.
And everything, in its own way, right.
29.6.2015, 23:11
The manager of course was mistaken. In the US, the concept of "octane index" is used. This is the arithmetic average between the octane number of research (RON) and Motor (MON) methods.
If the instructions are written in the "Octane Index 91", then even our 95th (RON) is questionable, because its index is less than 91
Well, if it is so reasoned, then not the "octane index", but an "anti-knock index" or something like that - I don't remember exactly, but it starts exactly with the letter "A".
Yes, there is such a concept in the States. But the speech with Megere went on the octane number. This time.
Secondly: in Japan, the octane number is indicated by the research method (as we have) - I know for sure. And there the MR20DE engine is excellent and not the contrast of the instruction works on the 91st gasoline - "regular".
Third: there is more information about gasoline on the benzobacco hatch (applied at the factory). So, on the car, Japan builds with the MR20DE engine is written simply: only unleaded gasoline.
29.6.2015, 23:17
Manager tried to explain to a simple language for dummies. But still not understood it. It is a pity, of course, that the 80i76 was removed from the dressing, so it was possible to pour it, laughing in the face of managra
Megher (pay attention to writing the word) tried to answer the answer of the answer to which he did not know. This time.
Mengher and the manager for me are two different concepts. The manager is a completely adequate specialist. And Meganer is a messico with Ponta. And to admit that he does not know what he looks like a religion does not allow him to be bother. They are fully not only in car dealerships.
And the third, resulting from the second - sin over Mengorome do not laugh.
that if the compression ratio is less than 10,
In general, the MR20DE engine has a compression ratio - 10.5. And DD is a little more (another head).
And roughly speaking, the engine with a compression ratio of up to 11 is considered lowformed.
29.6.2015, 23:24
Engine 2 liters, Lew 92 already 200 thousand! Flying normal! Throttle valve never cleaned !! The catalyst error is burning for 2 years
I remembered the interesting moment about Japanese engines:
In Japan, there were no 95th gasoline in the past century. Rummaged on the network. Found Japanese standards for gasoline. And now it is not.
In Japan, there is no 95th gasoline, as in Europe 92th. There are 91st, there are 98th, and the 92nd is not. In how.
Those. The Japanese engine in principle cannot be designed to work on the 95th gasoline. Or on the 91st and above or not below the 98th.
And here we argue the 92nd or 95th. And it is necessary to argue the 92nd or 98th.
I do not quite agree when the car receives accreditation and certificate (in the Russian Federation GOST P or certificate of conformity), then it is tested on the type of fuel that is in the country, so it's not entirely correct to compare fuel
do not quite agree
Agree with facts or not - everyone's personal matter. But the facts from the fact that someone with them do not agree not cease to be facts.
Just remembered at leisure in the hotel that when in the mid-90s in Japan, it was not one car bought - there was no 95th gasoline there, as such. And now it is not, as it turned out.
P.S. And I didn't quite understand your phrase. Explain. We also have the 92nd and 95th and 98th there.
And in the states, too, there are 92nd and 95th and 98th .. But if you look at the site OD in the States, we will see that gasoline "Regular" with an octane number of 91-92 is recommended (according to the generally accepted research method) and With AKI 86-87. And this is also a fact.
P.S. When Menager asked Megera in Toyota, I was interested in the official motivation of the Russian representative office. But Megerer suffered ahine. Although I believe that one should know official motivation.
14.7.2015, 15:50
Nicholas_1811
ABOUT! Excellent. I get my new one - I will start on bezenus to save :-)
Somehow, somehow, the degree of compression is still 11.2, not under the 92nd engine did this. Although once a full tank 92 flooded - no difference, except for the expense, but the question is what will be if you constantly roll on it ...
Nicholas_1811
Hmm .... and where in Russian manual is written "not lower than 91" ???? I have written "... 95" (Dviglo 2.5 L). Essen 92th poured in full Baku and half. Okay by ketching. The difference in the dynamics did not notice, but before that, the established average consumption on the 92nd filled up somewhere on the liter.
On the margin of 2 liter, the difference is more noticeable. He is still not very smart after you reproduce with 2.5, and on the 92nd it seems that it does not go at all. Although he is a purebred right-hand drive Jap, designed for the 91st bezus.
So in the QR25DE engine with a compression ratio of 9.5 (if not mistaken) 92 just right
Somehow, somehow, the degree of compression is still 11.2, not under the 92nd engine did this.
Well, yes, the degree of compression is more than DE, and the injection straight, and not distributed. By what gasoline 91st or 98th, this engine did it difficult to say. Where to look for info, I expressed my thoughts.
But just did not do under the 95th. No 95th in Japan.
Yes, and then - Japan. And the Japanese manage to do a diesel engine to do under the norms of Euro-6 without the COMMON Rail system (with block pump) and without recycling exhaust gases.
