What is RON?Answer : RON stands for
Research Octane Number rating for unleaded petrol. It determines the petrol`s `anti-knock` quality or resistance to pre-ignition or detonation as it burns in the
combustion chamber. Knocking occurs when the fuel-air mixture in the cylinder explodes instead of burning in a controlled way. This shockwave moves within the combustion chamber, and creates a metallic `pinging`. It measures the combustion properties of the fuel.
Can all Proton & Perodua vehicles (including those with carburettor fuel system) use the RON 95 petrol?
Answer : Yes
I have been using RON92 petrol for my car with carburettor fuel system. What will happen to my vehicle if I switch to RON95?
Answer : There is no effect to your vehicle engine.
I have been using a particular brand of RON97 petrol for my Proton & Perodua car, will the engine of my vehicle experience “knocking” when using RON95?
Answer : No, because all most of nowadays car engines setting allow the use of petrol with RON95 and above.
Do I need to get the engine of my vehicle tuned, if I switch the petrol to RON95? Do I need to add petrol additives which I can buy from auto parts shops?
Answer : No. Not necessary.
Will petrol additives help prevent “knocking”?
Answer : It will depend on the additives contents.
Can I mix the RON 95/RON97 petrol for my car?
Answer : Yes, there is no problem mixing the various grades of petrol.
What is your advice for vehicles that experience engine knocking?
Answer : For cars that experience “knocking”, it is advisable to send them to Service Centre to check for carbon deposits in the combustion chamber and also the ignition timing.
What do the numbers 95 and 97 mean?
Answer : The numbers 95 and 97 represent the minimum RON value of a fuel that will prevent “engine knocking”.
What is “engine knocking”?
Answer : Engine knocking happens when fuel combusts prematurely before ignition by the spark plug, which causes a “knocking” effect, resulting in loss of power. Using the appropriate minimum RON fuel that is recommended by your
vehicle manufacturer will ensure that combustion happens at the high time to avoid “engine knocking”.
What is the minimum RON requirement for my car?
Answer : Your vehicle’s manual should specify what minimum RON value fuel to use. Sometimes, this information is printed on or around the refuelling cap. If unsure, please check with your vehicle manufacturer, authorised vehicle distributor or with an authorised mechanic.
Can I use RON 95?
Answer : That depends on your engine. Your vehicle can use RON 95 if it is designed or set for RON 95 or lower. However, the best thing to do is to check with your vehicle manufacturer, authorised vehicle distributor or with an authorised mechanic.
What RON works best for my vehicle?
Answer : You should always use a fuel that meets or exceeds the minimum RON recommended by the vehicle manufacturer or authorised mechanic.
Can I mix RON 95 with RON 97?
Answer : As long as the fuel meets or exceeds the minimum RON required by the engine, mixing is fine and should not damage your engine.
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