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A fair share of car owners are convinced that AI-95 gasoline is much better suited for their car than 92nd. Despite the fact that the owner’s manuals allow
One of the arguments made by supporters of AI-95 is the claim that it is less prone to detonation compared to the lower octane AI-92. At the same time, it is completely ignored that the ‘brain’ of every more or less modern engine has the function of an octane number corrector. Next on the list of “cardinal advantages” is the statement that the car consumes less fuel when refueling 95. It is also considered an indisputable fact (for some reason!) that higher octane gasoline allows the engine to produce much more power.
In fact, all the benefits mentioned were more or less significant only at the beginning of this century, when organometallic additives containing lead or iron compounds were still used to increase the octane number of fuel (both AI-95 and AI-92). . At that time, yes: the use of fuel with a higher proportion of such additives provided an engine performance increase of 2-3%. And some car owners even felt this difference.
However, these types of additives have been banned everywhere in Russia for a long time. Instead, another additive is now responsible for obtaining the required octane number of the fuel: methyl tert-butyl ether (MTBE). The share of this organic substance in the finished gasoline is 10-15%.
One of the disadvantages is the fairly high volatility. That is, when we talk about the evaporation of gasoline, we must understand that it is MTBE that leaves it first. It is this substance that first flies into the cylinders via the gasoline vapor recovery system. Meanwhile, fuel with a reduced octane number remains in the tank.
AI-95 contains noticeably more MTBE than AI-92. Accordingly, such losses of the additive are more noticeable to him. And the greater the amount of gasoline we usually put in a car at a gas station, the stronger this effect is. MTBE rises especially well in warm weather. As a result, it turns out that no matter what gasoline we fill the car with, ultimately we can never be sure of the exact octane number of the fuel burning in the engine cylinders at any given time.
Experts claim that a vehicle that can consume gasoline with an octane number of at least 91 when switching from AI-92 to AI-95 shows a power increase of no more than 1% – and even then only under ideal laboratory conditions . Therefore, any talk of “greater efficiency” or “increased productivity” of AI-95 fuel over AI-92 has no bearing on reality. Everything is at the level of the driver’s subjective sensations, nothing more.
One of the arguments made by supporters of AI-95 is the claim that it is less prone to detonation compared to the lower octane AI-92. At the same time, it is completely ignored that the ‘brain’ of every more or less modern engine has the function of an octane number corrector. Next on the list of “cardinal advantages” is the statement that the car consumes less fuel when refueling 95. It is also considered an indisputable fact (for some reason!) that higher octane gasoline allows the engine to produce much more power.
In fact, all the benefits mentioned were more or less significant only at the beginning of this century, when organometallic additives containing lead or iron compounds were still used to increase the octane number of fuel (both AI-95 and AI-92). . At that time, yes: the use of fuel with a higher proportion of such additives provided an engine performance increase of 2-3%. And some car owners even felt this difference.
However, these types of additives have been banned everywhere in Russia for a long time. Instead, another additive is now responsible for obtaining the required octane number of the fuel: methyl tert-butyl ether (MTBE). The share of this organic substance in the finished gasoline is 10-15%.
One of the disadvantages is the fairly high volatility. That is, when we talk about the evaporation of gasoline, we must understand that it is MTBE that leaves it first. It is this substance that first flies into the cylinders via the gasoline vapor recovery system. Meanwhile, fuel with a reduced octane number remains in the tank.
AI-95 contains noticeably more MTBE than AI-92. Accordingly, such losses of the additive are more noticeable to him. And the greater the amount of gasoline we usually put in a car at a gas station, the stronger this effect is. MTBE rises especially well in warm weather. As a result, it turns out that no matter what gasoline we fill the car with, ultimately we can never be sure of the exact octane number of the fuel burning in the engine cylinders at any given time.
Experts claim that a vehicle that can consume gasoline with an octane number of at least 91 when switching from AI-92 to AI-95 shows a power increase of no more than 1% – and even then only under ideal laboratory conditions . Therefore, any talk of “greater efficiency” or “increased productivity” of AI-95 fuel over AI-92 has no bearing on reality. Everything is at the level of the driver’s subjective sensations, nothing more.
Source: Avto Vzglyad
Donald Salinas is an experienced automobile journalist and writer for Div Bracket. He brings his readers the latest news and developments from the world of automobiles, offering a unique and knowledgeable perspective on the latest trends and innovations in the automotive industry.
