Weekend car = 5000rpm and above

haha... I think so for him... when u have redline 9000 RPM,.... still plenty leftover.

I believe cars are tuned to only one RON rating, not a range of them. You can use petrol with that RON or higher but not lower. Using a higher RON petrol has no benefit but won't harm the engine either. Using a lower RON risk engine knocking.

New generation car engines will compensate when detect a knock.

Higher ron fuel is actually harder to burn, so putting into a regular car will create more hydrocarbon than usual. It is not known for all car models though.

This post has been edited by jasonhanjk: Jan 21 2016, 09:35 AM

Not harder to burn.. it is more resistant to self ignition.. so that it does not prematurely detonate before the spark plugs ignites it. Once the spark plug fires and there is a source of ignition, the RON 100 will burn just like any other fuel.

The early detonation is due to heat, caused by compressing air and fuel. Higher ron can withstand higher temperature before it ignites. Because it is "harder" to burn, regular cars using premium fuel will produce more hydrocarbon. Some cars may even get less power with premium fuel.

Harder to burn WITHOUT ignition source. Once you light it with spark, it burns like lower RON fuels. The harder to burn part does not matter when there is an ignition source. Cars that don't need premium fuel might get less power is not because the fuel is harder to burn but higher octane means more 'hydrocarbon' addictive added to the fuel and the fuel no longer produces the same amount of energy. The fuel still burns but produces less energy than a lower RON fuel. Maybe in other languages they use the word 'harder to burn' as to say it produces less power. If that's the case I don't speak the other languages so well and won't argue with you on that.

I'm sceptical about the hydrocarbon part.... the amount of hydrocarbon in a given volume of petrol is fixed, how does regular cars product "more" hydrocarbons from burning the same volume of said petrol.

He is coming from the point that they have to put more hydrocarbons in it to up the RON.. which is also why higher RON petrol does not produce the same amount of power as lower ron since there is 'more' hydrocarbons per part of fuel.

No need to make things more complicated.
An engine which is already optimized/tuned to produce the best performance for example at RON97 will not yield any additional benefit when running higher RON than 97, so no need to waste your money buying RON100, just as simple as that.
If an engine is tuned to perform the best at RON100 then it would not give it's best by using just RON97 and therefore just go ahead and try the RON100 as it should give better performance.
If an engine is say optimized for RON98 then what you can do is mix RON100 with either 95 or 97 using just simple ratio to get RON98, then that should give you the best performance already, no need to fill up full with RON100.

When you burn hydrocarbon, the waste gases will be CO2, CO, H2O and hydrocarbon.
Vehicles will not completely burn the fuel so there bound to have some hydrocarbon being release to the atmosphere.

Putting higher ron into an engine that's not meant to will result in more hydrocarbon being release into the atmosphere, the burning is more efficient with lower ron rating.

This post has been edited by jasonhanjk: Jan 26 2016, 05:14 PM

You do know hydrocarbon exist in gas and liquid. Both Ron95 and Ron100 have almost the same equivalent energy content. So their hydrocarbon content will not differ significantly. The main difference is in the exhaust. The less efficient you can fully burn the fuel, the more hydrocarbons will be release to the atmosphere.

Do note that I did not mention more hydrocarbon in the fuel. Till date I always mention the exhaust unless I miss out mentioning it.

A few post ahead mentioned that RON is just an indicator to the resistance to uncontrolled self ignition of fuel in the engine. How efficient in burning the fuel really depends of a lot of other factors plays a bigger role like fuel mixture, piston head design, spark plug design etc. For example if you tune an engine rich, the potential of hydrocarbon release in the exhaust stream will be more than a lean tune. That is when you can see flame coming out of the exhaust. Regardless of what RON rating fuel used.

Does anyone know how much is ron 100 now?

Based on latest pricing, it should drop 20 cents as well, I am expecting it to be at RM 2.60/L but this is RON 100 not 97 so yeah....
Another way is to go to the petrol station itself to check

This post has been edited by shinjite: Feb 3 2016, 03:27 PM

Hehehe ok, I will check tonight if I m free

Still the same, 2.80/ltr.

Dont spread misinformation to people when you don't know jack shit how things work. A RON number is not a measure of the fuels calorific or energy value. It is a standard the petroleum industry uses to quantify the anti-knocking properties of a fuel.

A RON90 fuel corresponds to a fuel with the same anti-knock ability as equivalent 90% vol of iso-octane (which is a component in gasoline usually added to raise the knock resistance).

Think of an explosion as a series of successive chain reaction. When you add long chain branched hydrocarbon (such as iso-octane), the chain reaction propogation is harder because long chain branched hydrocarbon are harder to break which essentially kill off your chain reaction (no chain reaction, no detonation).

Methanol, ethanol, MTBE are all anti-knock agents that the petroleum industry add to fuel. The energy or calorific value of fuel is an important fuel specification and the industry blends the fuel with additive and chemicals to get the required spec.

This post has been edited by 779364: Feb 3 2016, 08:24 PM

Just wondering,

What is the color of RON 100 fuel? Isit same with 97?

97 - RED
V-Power - Blue
95 - Gold/Yellow

Pls don't mind him bro..

He said in axia thread that pumping ron 100 will damage n is harmful for the environment compared to ron 95

I challenged him n said ron 95 is euro 2 petrol while ron 97 n 100 is euro 4 petrol

How can it be more harmful for the environment when there is less sulphur n gas emission?

He didn't even dare to respond after that

A lot of weirdos n "car experts " in lyn forum

This post has been edited by -PuPu^ZaPruD3r-: Feb 3 2016, 10:56 PM