Beware of Knocking: Know the Fuel Octane that Suits Your Vehicle's Engine Compression Ratio

Choosing the fuel with the appropriate octane rating (RON) for your engine is a crucial matter. Selecting the wrong fuel can have fatal consequences for a vehicle's performance and lifespan. Using low-octane fuel in a high-compression engine can cause "knocking" or incomplete combustion, damaging internal engine components, reducing performance, and increasing fuel consumption. Furthermore, using the wrong fuel can also void the factory warranty.

Here is a quick guide:

• RON 90 (Example: Pertalite): Suitable for vehicles with a low engine compression ratio, which is around 9:1 to 10:1.

• RON 92 (Example: Pertamax): Recommended for vehicles with a medium compression ratio, which is 10:1 to 11:1. This is generally used in modern cars with Electronic Fuel Injection (EFI) technology.

• RON 95 and above (Example: Pertamax Turbo): Used for high-performance vehicles or luxury cars with a compression ratio above 11:1. These engines require high octane to prevent "knocking" or damaging incomplete combustion.

Choosing the fuel that matches the compression ratio is important for maintaining performance, fuel efficiency, and preventing engine damage.

To select the right fuel, check the owner's manual or the sticker on the vehicle's fuel cap. Choosing the fuel according to the manufacturer's recommendation is a smart investment to keep your engine optimal, maintain performance, fuel efficiency, and prevent engine damage.

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