Does the higher octane fuel really make a difference in your car’s engine or is it a myth?
It is believed by many people all over the world that higher octane fuels such as 91, 93, 97 and 99 octane fuel is bad for the normal car’s engine.
I disagree. I’ve been putting nothing but the higher octane fuel in my cars for years and they do wonders. One can feel the difference with the normal 87 octane and 97 octane fuel in their car’s fuel tank. With 97 octane fuel, the car’s engine noise reduces, more power can be felt on the same roads, same gear and with the same driver behind the wheel.
97 octane fuel is more expensive, yes. But have you asked why?
The answer is simple. Eat food cooked in olive oil and eat the same food cooked in ground nut oil and the difference is that. It’s the same for your car’s engine too. Not that there’s anything wrong with 87 octane fuel, it’s just that the higher octane fuel have the following advantages :
1) It reduces emissions, which is good for the environment
2) It increases fuel efficiency, as the 87 octane fuel burns only 87 percent of the fuel and leaves back the rest of the impurities in the car’s tank/ 91, 93, 97 and 99 octane fuel burn 91 percent, 93 percent, 97 percent and 99 percent respectively. Thus increasing the overall fuel efficiency of your car.
3) The higher octane fuel reduces engine noise and knocking.
4) Higher octane fuels keep the fuel tank, fuel injectors and fuel lines cleaner than the normal 87 octane fuel.
Many automakers have printed in their vehicle’s owner’s manual that they recommend standard fuel (which is 87 octane).
The reason for this is that not all fuel pumps have the higher octane fuel readily available, hence making it difficult to find.
Many people believe that, to run higher octane fuel in your car, they need better engine compression. Let me say that, you simply don’t. It’s like a person saying that they need a new digestive system to digest food cooked in olive oil.
In the long run, the higher octane fuel does wonders to the engine. Because your car’s fuel injectors are clean, there is smoother and more effort less power delivery in almost every gear.
People also believe in octane boosters, which is good too. But octane boosters are expensive and not easily available, and in difference of ₹2 - ₹3 why not put the higher octane fuel ? No matter how good the booster is, in my opinion it cannot be compared to higher octane fuel. Reason being, the octane booster has to mix with the fuel in the tank and go into the engine, whereas the higher octane fuels are already clean hence reducing the stress level on the fuel pump.
So in short, are higher octane fuels worth it ? In my personal view, yes. I agree they’re expensive to put and difficult to find but 91 octane is almost available at every fuel pump. You may get a little less fuel in exchange for your money, but it’s worth it. Imagine the cost you’re saving, because you don’t have to clean the injectors as often as you do. Your fuel lines and fuel tank stay clean. To get all that cleaned and taken care of, the cost is high and isn’t cheap. Plus you might go a day or two without having your car.
I’ve written this article because I’ve experienced the difference the higher octane fuel does to your engine in the long run.

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