You might have seen numbers like RON97 and RON95 at your neighbourhood petrol station. Fuel with a RON97 rating is more expensive, RM2.05 per liter at time of writing with the lower RON95 rating going for RM1.80.
Have you ever wondered what they mean? Why is RON97 more expensive than RON95, and can you use RON95 to save on fuel costs?
Let’s have a discussion. What petrol do you use regularly, and why do you like your choice of petrol? Or are they all the same to you?
RON97, RON95, who is this RON person?
You might have seen numbers like RON97 and RON95 at your neighbourhood petrol station. Fuel with a RON97 rating is more expensive, RM2.05 per liter at time of writing with the lower RON95 rating going for RM1.80. Have you ever wondered what they mean? Why is RON97 more expensive than RON95, and can you use RON95 to save on fuel costs?
RON stands for Research Octane Number, a rating used to measure a fuels knocking resistance in spark-ignition internal combustion engines. Before we attempt to understand this mumbo jumbo, we have to know what knocking is. Knocking is what happens when parts or all of the air-fuel mixture prematurely ignites before the flame from the spark plug can reach it. This can be caused by ignition timing that is too early or engine overheating, where the heat from the cylinder itself causes the mixture to combusted before the spark plug can burn the mixture. This causes a decrease in performance and might also harm the engine.
It is a misunderstanding to think that RON97 fuels produce more power than RON95 fuels, even more so with the fact that in reality a higher RON number means the fuel burns less easily! RON refers to the ability of the fuel to resist knocking and nothing else.
By pumping the RON97 into a car which engine only requires the RON95, all you're going to get is an emptier wallet! hardly counts for performance gains via weight reduction!
Engines are designed to have a minimum RON rating for its fuel. Do check your service manual for the minimum RON rating that it requires. For engines that require a minimum of RON95, you might as well pump RON95 fuel and save a bit of money since RON95 is cheaper. No need to waste your money. Better you buy me a Teh Tarik with the money you save, thanks! :)
- Rintihan Rasa, 04/09/2009, 10.10 p.m -
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2 komen:
this is very wrong information..
max RON is 100..the best ignite fuel..very min volume will burn u up..
RON 97 is intermediate.
RON 95 is worse unlead fuel.
once u use RON 95 and it will consume u a lot when climb.
yes, high RON will lead to knocking issues.
Do u knocking though? it always happen on V type engine.
like mine, my mivec currently using ron97 or v-power. if i pump it with ron95, it take a month to clean up the knocking sound.. what the heck?
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