Can You Put 91 Octane In Any Car? - The Truth About Cars - Navara

Can You Put 91 Octane In Any Car?

Can you put 91 octanes in any car? 

Not all cars can use 91 octane gasoline. Most of the car produced for the market today use high octane gasoline.  If you are not sure about what gasoline octane rating to use for your car, check out your car user manual it indicates what type of fuel to be used for your car.


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What happens if you use 91 octanes on the car with recommended fuel of 95 octane or above? 
Engine pinging is one of the problems your car will encounter if you use 91 octanes on the car that requires high octane rating. Pinging sound occurs while driving on flat roads or while driving uphill. Pinging sound is categorized as an engine related fault, and one reason that triggers pinging sound is the used of a low octane gasoline fuel like 91 octanes.

Gasoline with low octane rating especially those with an octane rating of 91 or below or low-grade gasoline can cause engine pinging sound, those type of gasoline burns easily because of being too combustible. 

If the gas burns easily, under certain conditions it will self ignite before the piston reaches the top of the combustion chamber thus pre-ignition occurs, this will cause the engine to create pinging sound.

So, to avoid a problem like pinging sound always use gasoline with a higher octane rating. When you refill look at the gasoline station look closely at the gasoline station pump, the octane rating label is located on the front of the gas pump.

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Usually, gasoline with high octane are those with 93 RON or above rating (some gasoline station do not have 93 octanes) and are usually called super gasoline, the available gasoline in the market now is 91 octane, 95 octanes and 100 octanes.

Suggested Reading:
How can you save on gas while driving?

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