What is High octane petrol

[suzukialtomehran]

Hi guys my ? is what is High octane petrol and what is the difrence in high and normal patrol

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[toofast]

Octane rating of normal patrol is 87 and hi octane is 93. I am no scientist but it gotta do with structure of molecule.

[suzukialtomehran]

Thanks but still ????????????????????????????????????????????????

[SER_GTR]

hello!
1st of all you have to know that what is octane....so Octane is measurement to a mixture of isooctane (an isomer of octane) and n-heptane. A low octane rating means that the fuel has a high capacity to autoignite,means it is for engine with low compression like mostly 800-1300cc have...
high-octane gas is designed to burn slower than regular, making it less likely to ignite without benefit of spark in severe hot temp...
High octane is specified so high compression engines so that it can't auto-ignite before spark hits.....using regular on high compression engines might do this and as a result....Knocking occurs...
Knocking is a pinging like sound you heared when fuel ignites before spark hits....
Many high-performance engines are designed to operate with a high compression and thus need a high quality fuel usually associated with high octane numbers, and thus demand high-octane premium gasoline.
here mostly we get Premium was 87 octane whereas HOBC here was 92 as they said...with lead addictives.....
Thanxxx

[hash4u]

Raashid bhai
this question is for u

by the way my car is knocking like hell on super fuel .... she is dying to have some high octane....hehehe cruel kanjoos me

[yasir1711]

or in oder words....petrol wid more fuel power

[SER_GTR]

hello!
hash..bad listening that....man its just an insult of 20V for me really :(.....it deserves 92 RONS........or some more....its like you get elephant and won't provide real food for it...just small chunks of food....so its like that :)....if get 20V....will run on HOBC.....
Thanxx

[suzukialtomehran]

Thankx to all aur kya high octane petrol mehran kai engine ko damage to nahin karai ga aur yai muffler kia cheez hoti hai.

[SER_GTR]

hello!
premium is suitable for mehran engine...you can mix some HOBC in premium to get some good results....pure HOBC will surely won't burn completely resulting in poor milage and other problem....
muffler...what comes in your mind...usually we wear around neck in winters :p.....
its a silencer of car you usually said it and some desi ppl said its "Dholki"...thats what the muffler is....
Thanxx

[MotownMadman]

The high octane fuel will reduce a pre-existing knock problem, however it is a band aid solution. I would advise locating teh root cause of teh knocking and fixing that as 93 RON will cost 10% more than 87 RON.

Now in a well running carburetted engine without a knock sensor high octane will do you no good.

A higher octane number only helps when an engine computer with a closed loop feedback system retards timing upon the onset of knock to allow an elevated power output under heavy loads (led foot).

Hope this helped

[suzukialtomehran]

Thanks to all of you . Thanks

[void]

Can any one tell me if we use high octane in cars with EFI engines, would it make any difference?!?!

As far as i know high octance fuel will not make your car go faster or run better, it reduce/eliminate knocking in high compression engines that usually race cars have. So will it be of any worth if i use high octane in my 1.6 GTI baleno?!?!

So anyone with different theory than me, come up with solid explanation and references? =)

[tabishsta]

@suzukialtomehran

here is a link for you!

http://science.howstuffworks.com/gasoline3.htm

[moizhusain]

Why do I get better milage with high octane? does it have more energy than standard RON 87?

[Storm]

@void
you are correct, the higher the octane rating the more resistant the fuel is to burning, that's why vintage cars cannot be run on these modern fuels, they run compressions of 3:1 maximum and have weak sparks. now days highrevving, hot running, highly tuned engines require the highest possible octane rating to ensure the fuel stays stable and the maximum performance can be extracted from the engine.

@moizhusain
probably has more to do with the quality of the fuel, and there is alos a possibility that your engine runs better on a higher octane fuel which would explain the better milage.

[kfanis]

octane fuel suitable for khyber? can i use it ?pick may koi farq paray ga?

[waleed_khushi]

^^^ yes u can use it . it will increase ur pick a lil bit

[2468]

@kfanis
Stick with premium its enough for khyber

[cvanesk]

jis mein octane ki % high ho......

[zank]

Can we mix HiOctane and Super like 50-50% in cars like Cultus?
What improvements or downsides willl be there?