What is the difference between gasoline, where the numbers found in gasoline indicate the availability of octane or similar substances in terms of composition and effect, as it increases the quality of petroleum in terms of the ability to withstand pressure, and therefore the ability to determine the difference between gasoline 91 And gasoline 95 is the octane percentage present in the fuel? In our article on the reference website, we will learn about what octane is and the other most important differences between types of gasoline.
What is gasoline?
Gasoline is the fuel that is used to drive vehicles, and it is a complex mixture of more than 500 chemical compounds, which make up about 25 compounds of this mixture, which is eventually formed as gasoline, and some countries call it another name such as Petroleum - Gasoline - Mojaz.
91 VS 95
There are some differences between gasoline 91 and 95, the most important of which are:
- If the number “95” increases more than the number “91”, this indicates that gasoline can withstand pressure more, meaning that 95 gasoline can withstand pressure in the explosion chamber more than 91.
- Gasoline 91 is mostly used in old engines. These engines were specifically designed to withstand the pressure inside the explosion chamber so that the power does not exceed the octane ratio. As for gasoline 95, it is intended for engines that provide great pressure in the explosion chamber, which means that the use of 91 gasoline In automobile engines, high pressure is not suitable and may cause malfunctions in the engine parts in the future.
- There are no problems with using 95 gasoline instead of 91 gasoline in cars that run on old engines because the electric spark works on causing the explosion and not compressing the air.
- There is common and wrong information circulated by many, which is that gasoline 95 has a greater carrying capacity than gasoline 91, which increases the car’s torque and capacity, but the truth is that the difference between these two types is the ability to withstand pressure in the explosion chamber, and this also leads to a widespread error that gasoline 95 More quality than 91 gasoline.
How do gasoline engines work?
The mechanism of the work of gasoline engines lies through the pressure that generates an explosion of air in the engine. A temperature rise, repeating this process in a car's internal combustion engine, leads to the production of energy that makes the car move.
What is octane?
The term octane in gasoline refers to the ability to resist the sudden explosion that results from pressure in the engine cylinders. The higher the octane number, the greater the ability to resist combustion.
The importance of octane in gasoline
The octane ratio of each engine is determined based on the appropriate ratio to prevent the explosion of the gasoline mixed with air before the spark of combustion reaches. Explains the crackling and thundering sound in the car engine, the higher the octane ratio of the gasoline, the less likely the explosion will occur, since the mixture in the engine cylinder before the spark provides calm and order in the engine rotation because the explosion of the mixture occurs at its natural time.
What do octane numbers indicate?
Different types of gasoline have an octane number, including (87 - 91 - 93 - 95 - 98). Here we will explain the meaning of octane numbers:
- Gasoline with an octane number of 87 indicates that the ratio of resistance to bumping, i.e. popping, is like the resistance of standard gasoline consisting of 87% iso-octane, while the rest is 13% is normal.
- Gasoline that has a value of 95 octanes, means that the ratio of its resistance to bumping and cracking, like the resistance of standard gasoline consisting of 95% iso-octane and the rest up to 5% normal.
- Gasoline with an octane number of 100 and above means that the anti-flounder ratio is 100% iso-octane, meaning that the iso-octane component is a pure compound and it is anti-fouling.
Can a petrol 91 car be used with 95? petrol?
Yes, a car with 91 petrol can be used with 95 petrol. It must be known that higher octane does not mean that it is cleaner petrol. The idea is that 91 petrol is of the same quality as 95 petrol, but the octane ratio is more than the other.
How do we determine the right type of gasoline for a car?
Whoever drives the car can determine the appropriate type of gasoline, whether it is 91 or 95, through the following observations:
- If the torque of the car is less than normal, it means a lack of octane.
- If the gearbox is in the “n” position (the car is stopped) and then you suddenly press the gasoline, and then you hear a popping sound from the engine, then this means a lack of octane.
- If the car is traveling at a low speed and then you make a sudden increase in speed, you hear a popping sound, fast or continuous, this means a lack of octane.
- If you are returning from a far place, and you turn the car off and the engine does not stop immediately, this indicates an octane deficiency.
- If these observations appear, it is better to use 95 octane gasoline. These notes apply to the car that is operating properly.
Important tips when filling petrol
Some may think that filling gasoline is normal and its method is simple, but the truth is different. We will review some notes and the most important tips when filling gasoline:
- Do not fill fuel except in the morning hours until the earth’s temperature is at its lowest since gas stations bury their stores underground, and here comes the equation that the lower the temperature, the lower the fuel density, and the higher the fuel density, and this is what differentiates in quantity and capacity.
- When filling, do not press the pump handle too hard, fuel pumps must be used at a slow level to reduce the fumes emitted from the fuel, which makes you find that you did not get the required amount of fuel.
- Fill the tank when it reaches half empty. The reason is that the fuel evaporates quickly, the less air is in the fuel tank, the less fuel is evaporated.
- If there is a fuel tank unloading its cargo at the station you want to fill up from, do not fill the fuel at the same time, because the fuel tank at the ground station will overturn the dirt at the bottom of the tank and may negatively affect your car.