Octane Really Does Help
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From: Horncastle Lincolnshire, England
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Octane Really Does Help
I just filled up with 99 Octane this week. Normal octane over here is 95 and that equates to about 91 in the US. the Super is about 98 octane or 93 US. 99 is about 94 US octane.
I have to say that despite all the discussion over the last year I really noticed big difference in peformance. The pick up on acceleration was marked and the Vette really seemed way more responsive, even though it was raining as usual. I really enjoyed the drive home. Music up loud and I think I hit 70 at least twice on the journey.
aside. How many of you get the chance to compare low octane and high octane gas regualrly? In Vegas I was stuck with 91 which is the same as regular gas over here. But a bit of spirited driving and I think I may be back to that gas station again.
I have to say that despite all the discussion over the last year I really noticed big difference in peformance. The pick up on acceleration was marked and the Vette really seemed way more responsive, even though it was raining as usual. I really enjoyed the drive home. Music up loud and I think I hit 70 at least twice on the journey.
aside. How many of you get the chance to compare low octane and high octane gas regualrly? In Vegas I was stuck with 91 which is the same as regular gas over here. But a bit of spirited driving and I think I may be back to that gas station again.
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Tech Contributor
Joined: Dec 2003
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Thread Starter
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Joined: Dec 2003
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
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All we have around here is 91 octane. Would like to see what a 93 octane would do for the car.
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From: S.W. Ohio. . . . . . NRA Life Member
I'm glad that the increased amount of combustion inhibitor helped your Corvette run better.
As long as you know the technical reasons why increased octane may help, then you are in-the-know
and that's all that matters.
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But there's no "discussion" about it; octane is not a booster; it's an inhibitor. if increasing octane made your car run better, then it was pinging in the first place (and it may have soooo slight a ping that your ears didn't hear it); and timing advance was being pulled. By slowing down the flash point, your ping was eliminated,
I'm glad that the increased amount of combustion inhibitor helped your Corvette run better.
As long as you know the technical reasons why increased octane may help, then you are in-the-know and that's all that matters.
I'm glad that the increased amount of combustion inhibitor helped your Corvette run better.
As long as you know the technical reasons why increased octane may help, then you are in-the-know
and that's all that matters.
I like to look at it this way: octane "gives" you nothing. It merely ensures you don't lose what you already have. 
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scary!!!!!
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
But there's no "discussion" about it; octane is not a booster; it's an inhibitor. if increasing octane made your car run better, then it was pinging in the first place (and it may have soooo slight a ping that your ears didn't hear it); and timing advance was being pulled. By slowing down the flash point, your ping was eliminated,
I'm glad that the increased amount of combustion inhibitor helped your Corvette run better.
As long as you know the technical reasons why increased octane may help, then you are in-the-know and that's all that matters.
I'm glad that the increased amount of combustion inhibitor helped your Corvette run better.
As long as you know the technical reasons why increased octane may help, then you are in-the-know
and that's all that matters.
I agree totally and theres no doubt that the ignition has been retarded without my even knowing. Makes you wonder how bad it is for the guys who can hear the pinging. Good point, well made.
Mabe some sea foam would be agood idea - if I can find any in England
Last edited by DeeGee; Dec 8, 2007 at 02:49 AM.
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From: Stoney Creek Ontario
We can get 94 octane here at a few stations, and I noticed the car runs better than with 91. A few tanks of 91, and I can hear a little pinging under hard accelleration, a tank of 94 clears it up.....
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