Can You Put 91 Octane In Any Car? | all about cars

Can You Put 91 Octane In Any Car?

Can you put 91 octane in any car? well, the answer is NO. Most car especially those new model uses high octane gasoline that is 91 octane and above.  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 happen if you use 91 octane on car with recommended fuel of 95 octane or above? 
Engine pinging is one of the problem your car will encounter if you use 91 octane on the car that requires high octane rating. Pinging sound occur 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 octane.

Gasoline with low octane rating especially those with 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 such problems always use a gasoline with higher octane rating, during filling if you look closely the gasoline station pump you can see the octane rating 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 octane) and are usually called super gasoline, the available gasoline in the market now is 91 octane, 95 octane and 100 octane.

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

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