is 91 octane OK?

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Oct 11, 2006 | 03:31 PM

#21

IDM

Le Mans Master

Joined: Aug 2005

Posts: 7,890

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From: FL

Quote:

Originally Posted by ROJ#79

I run 89 in my '99 coupe with no problems and it runs great!

Why?

Oct 11, 2006 | 04:38 PM

#22

BMG50

Racer

Joined: Nov 2004

Posts: 496

Likes: 0

From: HIRAM GA.

I just came off a 5100+ mile trip with my 99FRC...04 modded ZO6 engine tuned with and for 93 octane fuel...when i got into Phoenix(with Shell 91 octane gas), the air temp. was only 92 degrees, but i had VERY HEAVY detonation...So bad i was concerned about damage....Drove VERY easy until i could get on the Interstate and headed toward 93 land......With my tune, 91 is out of the question for me....

Oct 11, 2006 | 04:51 PM

#23

~~Todd157k~~

Banned Scam/Spammer

Joined: Jul 2006

Posts: 2,911

Likes: 10

From: Simi Valley CA

We have a few "Alliance" gas stations in CA with 100 oct. racing fuel.

... at $5.00 / gal..

Oct 11, 2006 | 05:26 PM

#24

Wake Champ

Racer

Joined: Feb 2006

Posts: 383

Likes: 1

Quote:

Originally Posted by kisypher

i have driven all over this town, checked every gas station and NOBODY carries anything higher than 91. The best i have found is Shell V-Power 91, is that good enough or am i screwed?

I know Nebraska carriers 92 and 93 octane. It is just a matter of finding it! Look for an Amoco, or Conoco.

Oct 11, 2006 | 05:30 PM

#25

EStreeter

Burning Brakes

Joined: Feb 2005

Posts: 752

Likes: 1

From: Tulsa OK

93 went away around here about 18 months ago when the gas prices went nuts. No problem with 91 octane, car runs fine.

Recently got a tank of 93 in Missouri while travelling and it definitely makes a difference in power and mileage

- but you can only get what they have at the pump.

Oct 11, 2006 | 06:45 PM

#26

gordonb50

Burning Brakes

Joined: Nov 2000

Posts: 1,171

Likes: 1

From: Longview Texas

Altitude has something to do with it. Around the Texas gulf coast, 93 is everywhere. In northern parts of Texas, New Mexico, Arizona, 91 is what you see.