How do we choose the fuel: 95 or 98 octane gasoline?

Many drivers gasoline engines Vehicles when you visit them gas stations They ask if they prefer 95% or 98% gasoline. Let’s see all the information surrounding this issue.

Every visit to a gas station for Refueling the tank Our car in particular… serious matterWhich recently became more difficult after the jump Increase in diesel and gasoline prices.

All car owners know what kind of fuel their cars consume. However, many petrol car owners are in trouble when a gas station operator asks them if they prefer it. 95 or 98 gasoline, Because they may be unaware of their differences.

First of all, we must make it clear that the above numbers refer to Octane number of gasolinean indicator that gives insight into Fuel resistance to self-ignition.

As we know, fuel does not ignite by itself. Instead, there is a spark plug that produces a spark that causes the gasoline to ignite. But until the spark comes from the spark plug, the The fuel mixture must have the ability to not self-ignite Despite the increased pressure in the combustion chamber.

So here comes the octane numberbecause the larger it is, the higher the resistance of the fuel to self-ignition. Therefore, high-octane gasoline has a greater ability to withstand pressure Thus, combustion occurs in a more smooth and efficient manner.

What gas should I put in my car?

First you need to consult him Your car guide, where the type of gasoline to be used is written. In most cars 95 octane fuel is sufficient to ensure trouble-free engine operation.

on the other side, The use of 98% of gasoline is mandatory When the engine direct spray and therefore has higher compression ratio, Compared to an indirect injection engine.

This is because, in this case, a temperature of 98% of gasoline is necessary for Familiar “fireworks” do not appearAny ignition of the fuel before the spark from the spark plug could lead to severe engine damage.

Also, if you put 95% gasoline in a car that’s supposed to use 98%, the engine will show Slight decrease in performance and increased fuel consumption.

In fact, if your vehicle is a high-performance vehicle, the ECU may put the engine in safe mode, following a command from the knock sensor, to protect it.

In the event, right now, that your car runs on 95% gasoline, then Using 98 (or even 100) will not create any problembut it is an unnecessary cost.

Regarding, finally, the question Does 98 octane gasoline contribute to the cleanliness of the injection system?“The answer is yes. But the octane number is not responsible for this fact, but Special Extras Established by each fuel company in order to be able to justify the high price of the particular fuel.

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