Many motorists are not aware of the difference in the types of flammable liquid. In this article, we will briefly and to the point tell you the features of each. Let's go!
Motor gasoline
There are several types of fuel in Russia: AI-80, AI-92, AI-95, AI-98
In the name, «A» is automotive, «I» is are search methods for determining the octane number.
Often at modern gas stations there are columns with the prefix «K5». This is an environmental class designation, but it, for example, is no longer attributed in the Russian Federation, since only this type of gasoline is allowed on the territory.
The environmental class, in turn, depends on the amount of sulfur in the fuel.
Octane number
In complex terms, this number means the percentage of isomers and octane to heptane.
In simple words, internal combustion engines use fuel that hasa certain value of detonation resistance (the force of resistance toan explosion).
The number shows the ability of gasoline to resist spontaneous detonation. This indicator is usually in the range of 70-95 and does not exceed 100 (the most resistant to fire).
For example, if 0H = 95, it means that the gasoline detonates as a mixture of 95% is octane and 5% n-heptane.
AI-80 («standard»)
To find this type of fuel, you will have to visit many gasstations.
This type is used for machines with a long history.
It is applicable to brands such as GAZ, Moskvich and UAZ, formotorcycles IZH and Jupiter.
It is often applicable to agricultural machinery.
AI-92 («regular»)
The period of the 1990s-2000s is associated with this species. Engines produced at this time are more often serviced by AI-92m. It is this type of gasoline that is used in 40% of cases in the territory of the Russian Federation and the CIS countries.
AI-95 («premium»)
Despite the associative name, this type of fuel has long been rooted among the most commonly used. It appeared far back in 1972, when the first models of the Zhiguli brand were released.
At that time, this fuel was not sold at all gas stations with coupons. Most often, new generation cars are serviced by the 95th, according to data for 2024.
AI-98 («super»)
It is designed for engines with a high level of compression. Modern cars are recommended to refuel with 98.
The prefix "+" and ECTO for fuels denotes additional detergents for cleaning the fuel system.
What is DF at a gas station?!
Yes, this is diesel fuel. The main difference from gasoline is that there is no park plug in a diesel engine. Movement in such cars occurs dueto pressure, which heats the liquid.
Self-ignition of the mixture occurs. Unfortunately, in cold weather, diesel fuel thickens and becomes less efficient compared to gasoline.
Interesting Facts
At the moment, in Russia, the 95th type of gasoline costs 58.16 rubles / liter. And at the start of the launch in the USSR, it costed 10 kopecks, like the 98th. Gasoline consists not only of oil, but of a huge number of components.
Let's summarise
The octane numbers should be chosen based on the manufacturer’s recommendations, it is often written on the hatch near the gas tank.
Choosing a fuel with a high indicator does not give any efficiency, since the type of gasoline is related to the engine itself.
Additionally, in order to find out the appropriate AI number, it is worthfinding out what is the compression force of the engine fuel fluid. It is worth choosing gas stations that meet quality standards.