What is octane? KR? Explained here.

FastKatt · 04-07-2008, 10:28 PM

^^^ Good Question ^^^

archemedes · 04-08-2008, 06:23 AM

the way octane is figured it would technically be a percentage wouldn't it? ((R+M)/2.)
also found

Quote:

Octane number is the number which gives the percentage, by volume, of iso-octane in a mixture of iso-octane and normal heptane, that would have the same anti-knocking capacity as the fuel which is under consideration. For example, gasoline with the same knocking characteristics as a mixture of 90% iso-octane and 10% heptane would have an octane rating of 90. [1]

GTPJOE90 · 06-02-2008, 12:05 PM

actually made sense!

FastKatt · 06-02-2008, 12:44 PM

But then how could you have 110 Octane?

Reptile · 06-11-2008, 12:49 PM

From a short read, it pretty much depends on the blends of fuel you have. If you start with 100 octane race gasoline, then that is your starting point. Blending in different additives with a higher octane rating will result in a higher total octane rating in the final product.

I updated the first post with a little more information.

04 GTP COMP G · 07-12-2008, 10:41 AM

so can a person today run a percentage of pure toluene with 87% gas?

of course for me this would a lots cheaper. I got a few gallons of it

sgdude · 09-18-2008, 11:13 PM

i have a question:
i have a 97 GTP, bought it 14 months ago, always ran it on 86 octane (in NM regular is 86, not 87), never encountered problems, such as knocking. i recently filled up on premium 91 octane (ive used 4 gallons so far, i burn a gallon a day) i see no difference. so is it really important?

gtpinsc · 09-19-2008, 12:57 AM

Quote:

Originally Posted by sgdude

i have a question:
i have a 97 GTP, bought it 14 months ago, always ran it on 86 octane (in NM regular is 86, not 87), never encountered problems, such as knocking. i recently filled up on premium 91 octane (ive used 4 gallons so far, i burn a gallon a day) i see no difference. so is it really important?

In the long run , running higher octane gas with other preventative maintenance will extend the life of your engine.I allways use sunoco 93 octance...my car seems to like it.

Sabrewings · 09-19-2008, 04:21 PM

Quote:

Originally Posted by sgdude

i have a question:
i have a 97 GTP, bought it 14 months ago, always ran it on 86 octane (in NM regular is 86, not 87), never encountered problems, such as knocking. i recently filled up on premium 91 octane (ive used 4 gallons so far, i burn a gallon a day) i see no difference. so is it really important?

How do you know it wasn't knocking?

sgdude · 09-19-2008, 09:20 PM

Quote:

Originally Posted by Sabrewings

How do you know it wasn't knocking?

wouldnt u here it or feel it? ive never noticed any problems.

and if i should continue using premium gas, does it matter what station i get it from? i usually go to the cheapest station, ive tried others and noticed no difference

04-07-2008, 10:28 PM	#21
FastKatt SE Level Member Join Date: Feb 2008 Location: Rkrd, IL Posts: 147 Thanks: 2 Thanked 0 Times in 0 Posts iTrader: (0) Rep Power: 1	Re: What is octane? KR? Explained here. ^^^ Good Question ^^^ __________________ 2004 Grand Prix Comp-G GTP Mod List - MySpace Conscience is what hurts when everything else feels so good

06-02-2008, 12:05 PM	#23
GTPJOE90 GTP Level Member Join Date: May 2008 Location: Outside of Mchenry IL. Posts: 1,663 Thanks: 14 Thanked 4 Times in 4 Posts iTrader: (0) Rep Power: 2	Re: What is octane? KR? Explained here. actually made sense! __________________ [SIGPIC][/SIGPIC 99 DARK BRONZEMIST METALLIC GTP SUPERCHARGED SEDAN. --MODS-- FWI, 104 plugs MSD coils and wires, 180 t-stat, dual thrush exhaust, Kenwood complete system 10' Sub ported, raised spoiler, red calis, D/S Baer rotors, Hawk Pads.

06-02-2008, 12:44 PM	#24
FastKatt SE Level Member Join Date: Feb 2008 Location: Rkrd, IL Posts: 147 Thanks: 2 Thanked 0 Times in 0 Posts iTrader: (0) Rep Power: 1	Re: What is octane? KR? Explained here. But then how could you have 110 Octane? __________________ 2004 Grand Prix Comp-G GTP Mod List - MySpace Conscience is what hurts when everything else feels so good

06-11-2008, 12:49 PM	#25
Reptile Community Vendor Join Date: Dec 2007 Location: Kansas City, MO Posts: 1,497 Thanks: 0 Thanked 10 Times in 9 Posts iTrader: (7) Rep Power: 2	Re: What is octane? KR? Explained here. From a short read, it pretty much depends on the blends of fuel you have. If you start with 100 octane race gasoline, then that is your starting point. Blending in different additives with a higher octane rating will result in a higher total octane rating in the final product. I updated the first post with a little more information. __________________ GreenBastardPerformance2000 GTP Coupe (the green bastard) XP, Pacesetters, LS1 TB & MAF,MSD System, P&P LIM, P&P GenV w/ 3.2, 3.0, 2.8, Devil'sOwn Injected 100% Methanol,PowerTuned, TripleEdge Trans w/3.29's 12.92 @ 105mph Last edited by Reptile; 06-11-2008 at 01:02 PM.

07-12-2008, 10:41 AM	#26
04 GTP COMP G SE Level Member Join Date: Jul 2008 Location: Saskatchewan, Canada Posts: 96 Thanks: 27 Thanked 1 Time in 1 Post iTrader: (0) Rep Power: 1	Re: What is octane? KR? Explained here. so can a person today run a percentage of pure toluene with 87% gas? of course for me this would a lots cheaper. I got a few gallons of it

09-18-2008, 11:13 PM	#27
sgdude SE Level Member Join Date: Sep 2008 Location: Las Cruces, NM Posts: 33 Thanks: 0 Thanked 1 Time in 1 Post iTrader: (0) Rep Power: 0	Re: What is octane? KR? Explained here. i have a question: i have a 97 GTP, bought it 14 months ago, always ran it on 86 octane (in NM regular is 86, not 87), never encountered problems, such as knocking. i recently filled up on premium 91 octane (ive used 4 gallons so far, i burn a gallon a day) i see no difference. so is it really important?

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