Every driver has faced the dilemma at least once: whether to fill up with 92 or 95 gasoline? Both brands are available at gas stations, but what exactly is the difference between them? Let's take a closer look.
Key difference - octane number
The numerical designations 92 and 95 in the gasoline name reflect its octane number. This parameter demonstrates the fuel's ability to resist spontaneous combustion (detonation) inside the engine cylinders. The higher this indicator, the better the fuel resists such a destructive process.
- AI-92 - fuel with an octane number of 92.
- AI-95 - accordingly, with an indicator of 95.
Detonation processes are extremely destructive to the engine, as they provoke damage to the piston group and reduce the overall life of the power unit. Thus, the higher the octane number, the higher the quality and safety of the fuel for boosted engines.
Scope and engine types
Automakers specify a specific type of fuel for each engine model. This is due to differences in compression ratio, design features, and power characteristics of the engine.
- AI-92 is traditionally used in simpler and less demanding power plants with a low compression ratio.
- AI-95 is recommended for more modern and productive units with a high compression ratio or equipped with a turbocharger.
Using a car on unsuitable fuel can worsen its performance, reduce power performance and shorten engine life.
Price aspect
The cost of 92nd and 95th gasoline differs. On average, the price per liter of fuel with a higher octane number exceeds the cost of 92nd. This is due to the quality of the raw materials and the technological processes of processing necessary to increase the octane number.
Environmental characteristics and emissions
From an environmental point of view, 95th gasoline is generally considered cleaner, as it contains fewer impurities and pollutants. Modern vehicles equipped with catalytic converters are optimized for the use of fuel with an increased octane number.
Is it possible to pour 92nd instead of 95th?
In most situations, the power unit is able to function on fuel with a reduced octane number, however, the manufacturer strongly recommends following the established regulations. The use of inappropriate fuel can cause the following negative effects:
- Reduced power and deterioration of the dynamic characteristics of the vehicle.
- Increased mechanical load on the engine and accelerated wear of components.
- Unpredictable increase in fuel consumption.
It is especially critical to follow the recommendations of automakers if the vehicle is equipped with modern direct fuel injection systems and an engine with a turbocharger.
Listen to the manufacturer
So, the fundamental difference between 92nd and 95th gasoline is the octane number, which determines its detonation resistance. Depending on the design features of the power unit, it is necessary to carefully approach the choice of fuel, guided by the recommendations of the manufacturer. The correct choice of gasoline guarantees stable engine operation, its long service life and safe operation of the car.
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