Higher Octane?

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Higher Octane?

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Higher Octane? - 4/26/2007 12:29:38 AM

TMR Net Shark

Posts: 24
Joined: 4/16/2007
Status: offline

Generally stating in any car, can I use 91 octane in a car that says to use 87? I know if you do the reverse you get knocking or pinging. Will using a higher than recommended octane hurt my engine at all? Or will it actually help it?

Cars in question:
2007 Toyota Camry
2008 Mitsubishi Lancer GTS
1998 Ford Explorer XLT

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RE: Higher Octane? - 4/26/2007 7:56:59 AM

TheEngineer

Posts: 10457
Joined: 1/25/2006
Status: online

nope, shouldnt hurt it at all

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quote:

ORIGINAL: pilsenblue
Even tho My car looks great It will never be fast. Kinda like a hot girl that dosent give it up

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RE: Higher Octane? - 4/26/2007 12:31:55 PM

Dusty Eclipse

Posts: 4368
Joined: 2/23/2007
From: 11746,21114,34668
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I couldnt see why it would hurt it either... but for some reason whenever I used it in my Civic that called for 87 (Yes, the Civic I wrecked.) it tripped the CEL.

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Current cars: (What I havent wrecked)
1995 Eagle Talon TSi "Jackie"
2001 Mitsu. Eclipse GT "Dusty"
2000 Volvo V70R AWD "Mindy"

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RE: Higher Octane? - 4/26/2007 6:05:12 PM

Manybrews

Posts: 725
Joined: 5/23/2003
From: United States
Status: offline

using higher than recommended or needed octane CAN cause problems, as well as piss away money.
do NOT use it unless called for.
period.

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RE: Higher Octane? - 4/27/2007 4:05:50 AM

silvercoupe97

Posts: 3146
Joined: 11/10/2006
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Makes sense to me.

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Thanks,
John
6 bolt/2g head,1G rods/2G pistons,FPBig28,MBC,Forge 1G DV,alky inj,AFPR,255lph,780cc, 3" turboback,Centerforce,4 spider,FMIC, Prosport Boost&EGT gauges,AEM wideband,DSMlink, AGX/Skunk2

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RE: Higher Octane? - 4/27/2007 8:54:03 AM

Dusty Eclipse

Posts: 4368
Joined: 2/23/2007
From: 11746,21114,34668
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...explains a lot.

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Current cars: (What I havent wrecked)
1995 Eagle Talon TSi "Jackie"
2001 Mitsu. Eclipse GT "Dusty"
2000 Volvo V70R AWD "Mindy"

(in reply to silvercoupe97)

Post #: 6

RE: Higher Octane? - 5/10/2007 10:32:03 PM

year1lazer

Posts: 23
Joined: 4/27/2007
Status: offline

all higher octane does burn faster i tried it on my tiburon V6 i lost mpg.plus it cost more. your car will run better on 87 oct unless you have a car that needs 91 oct

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RE: Higher Octane? - 5/11/2007 12:05:19 AM

silvercoupe97

Posts: 3146
Joined: 11/10/2006
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Higher octane doesn't burn faster, it burns slower, that's why turbo cars and high compression cars use it. It's to keep knock in check AKA pre-ignition.

quote:

Octane is NOT a measure of power but of the fuels’ resistance to ignition from heat. A higher-octane fuel, under identical combustion chamber conditions, will burn slower.

http://www.bajajusa.com/High%20Octane.htm

You lost milage because your car spit out unburnt fuel out the tail pipe.

_____________________________

Thanks,
John
6 bolt/2g head,1G rods/2G pistons,FPBig28,MBC,Forge 1G DV,alky inj,AFPR,255lph,780cc, 3" turboback,Centerforce,4 spider,FMIC, Prosport Boost&EGT gauges,AEM wideband,DSMlink, AGX/Skunk2

(in reply to year1lazer)

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RE: Higher Octane? - 5/15/2007 10:20:04 PM

Clipse1

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Joined: 1/6/2007
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I think year1lazer is right! I tryed it too and I got the same results

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RE: Higher Octane? - 5/15/2007 10:56:48 PM

Kaede.Noir

Posts: 1719
Joined: 10/10/2006
Status: online

quote:

ORIGINAL: Clipse1

I think year1lazer is right! I tryed it too and I got the same results

but it has been proven by silver......

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''98 2g 420a
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Post #: 10