What Octane Gas?

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Sep 22, 2006 | 09:24 AM

#11

mypetu39

Senior Member

Joined: Jun 2006

Posts: 131

From:

RE: What Octane Gas?

Up here in Ontario, Canada, we have Sunoco 94 and it rings out to an actual 96 octane rating more for the Winter months than anything else. Burns extremely clean.

mypetu39

Dec 22, 2006 | 12:14 PM

#12

JoeVetteman

Senior Member

Joined: Nov 2006

Posts: 265

From:

RE: What Octane Gas?

Hello!! I think you should use 93,or higher,if you can find it.I believe the Vette has always required premium,but I'm not sure.But I would still use high-test.Just to be safe,you know??

Dec 22, 2006 | 01:31 PM

#13

raisinbran

Joined: Sep 2005

Posts: 406

RE: What Octane Gas?

The owner's manual calls for 91 octane. the higher the octane, the slower the gasoline burns. higher octane does help reduce knock, but after a certain point it will hurt performance unless your engine is designed for it.

Dec 23, 2006 | 02:09 PM

#14

92VETTE

Joined: Dec 2006

Posts: 22

From:

RE: What Octane Gas?

i run 93 in mine, and run a fuel system cleaner in every 4th tank...

Dec 23, 2006 | 06:46 PM

#15

BluBeaSSt

Joined: Jun 2006

Posts: 215

From: Kansas City Mo

RE: What Octane Gas?

91-93 depending on your state, I tried 87 ONCE in my LT1 and she hated it

Gotta pay to play

Dec 23, 2006 | 06:49 PM

#16

BluBeaSSt

Joined: Jun 2006

Posts: 215

From: Kansas City Mo

RE: What Octane Gas?

Quote:

ORIGINAL: Togarider

I read an article many years ago that you can run the lowest Octane in your car as long as it doesn't knock. That you are paying to much for high Octane if you don't need it.
But I have also heard just the other day that the new cars with computers will adjust the car to what ever Octane you put in and that it wasn't good to change your Octane back and forth because this would screwup your computer.

I would say in the long run that you own a Corvette for the preformance of the car and that it will perform best with High Octane gasoline (93).

All your computer will do is feel the pinging in the knock sensor then retard the hell out of the timing and you will lose hp. and no going back and forth wont screw up your PCM, all it is is a brain, it takes and recives info. you will never find the same rating any gas unless you go to the same station everytime you fill up.

Hope that makes sence

Dec 23, 2006 | 10:44 PM

#17

Crash

Joined: Jul 2006

Posts: 45

From:

RE: What Octane Gas?

Tried the low octain fuel in my 86 vert,when I first got it, the amount of pinging under the hood was crazy . I use the throttle pretty heavy and it would rattle like a diesel (the timing would retard but go back to a normal timing advance when not under load , mash the throttle again and the same thing would happen ) So I just use high octain only now and no more pinging.
Cheers Rob

Dec 24, 2006 | 06:37 AM

#18

raisinbran

Joined: Sep 2005

Posts: 406

RE: What Octane Gas?

I used to put in the V-power gas not only cause it was 93 octane, but also because its supposed to have all those extra detergents. The engine ran very smooth, but there seemed to be slightly less throttle respone. My car is happy on 89. I think ive got my timing at 8.5 BTDC