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The Difference between RON92, RON95, RON97 and RON99

Written by Nazri on September 9, 2009 – 4:27 pm - 639 views

Many understood that RON92 oil is the older oil, only suitable for older cars or for cars that use carburetor. There are furthermore some that understood that RON92 oil will make the engine dirty and also said that RON92 oil is a reduced amount of powerful compared to RON97 and RON99. Before you get on to any false assumptions, consent to us find out what the real meaning of RON is.

RON stands for Research Octane Number. Octane number or octane rating refers to the gasoline capability to hold up auto ignition (knocking) inside the engine. Higher octane number refers to higher capability of the oil to fight auto ignition. In other terms, it means that RON95 is harder to ignite compared to RON92.

Different vehicles are designed to be used with different octane number of oil. Higher octane number oil is basically designed in support of high performance vehicles such such as sports vehicle and racing vehicle. Why is that so? This is to prevent premature ignition of oil inside the engine because of auto ignition, which happens previous to the spark plug ignite the fuel. This phenomenon is recognized as knocking. Knocking is not wanted since it reduces the performance of vehicle.

The exact usage of octane number based on design and adjustment of engine will increase the performance and effectiveness of the vehicle. Current vehicles are equipped with knock sensor which enables it to adjust its combustion timing automatically according to the oil octane number to avoid knocking or premature ignition of oil.

Not all vehicles require high octane number petrol. You can check your vehicle fuel requirement inside the manual of your vehicle otherwise you can simply check the minimum Octane Rating at the back of the fuel lid cover of your vehicle. Generally cars can still use RON92.

Higher RON number does not mean that it is more powerful. It means that it is harder to ignite. It will also cost you more.

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