Higher Octane?
Thread Starter
Instructor
Joined: Feb 2005
Posts: 202
Likes: 0
From: Cedar Rapids IA
Higher Octane?
I feel like I should treat my C6 with some high octane fuel - But I worry I might hurt the engine in doing so..
Is anyone using 95, 100, 100 or higher octane in there C6 now?
Is anyone using 95, 100, 100 or higher octane in there C6 now?
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
Why? Don't think that's what the owner's manual means on page 5-5.
Gasoline Octane
Use premium unleaded gasoline with a posted octane of
91 or higher for best performance.
I thought premium unleaded had a max. octane of about 94.
Gasoline Octane
Use premium unleaded gasoline with a posted octane of
91 or higher for best performance.
I thought premium unleaded had a max. octane of about 94.
Melting Slicks
Joined: Jan 2005
Posts: 2,326
Likes: 5
From: louisville "derby city" kentucky
octane
be careful of 100 octane or higher that goes in airplane engines. it does not have the lubrication properties that auto fuel does. will wear top rings out early, causing a loss of engine life and power. learned the hard way trying to use it in drag race engines.... cranky 
Drifting
Joined: Jan 2005
Posts: 1,942
Likes: 1,328
From: Houston Tx
Octane higher than the engine is designed for does no good. You can find out why in post titled "gasoline facts" from a few months ago. To find it, simply type that title into the search function.
Burning Brakes
Joined: May 2005
Posts: 921
Likes: 146
From: Fairfax VA
Higher Octane gas was designed to account for compression ratio's. When leaded gas was phased out cars couldn't have high compression ratio's but by having a higher octane you could increase the compression ratio. This is why high performance engines with high compression ratio's use higher octane. If you put a high octane gas in a Civic it will do absolutely nothing for the car except cost you more. If the car was designed for 93 octane and you put 94, again, it probably won't do anything. The higher octane is to prevent the gas from exploding prior to the spark going off. You probably are wondering how can you then put a lower octane in the car. Well since the engine is electronically controlled it can alter the spark pattern so that it accounts for lower octane fuel, however it degrades performance and isn't normally recommended. So, in short just stick with a good gasoline supplier with the recommended Octane. Don't worry, there really isn't any difference in cleaning agents either. Hope this helps.
Le Mans Master
Joined: Aug 2000
Posts: 5,529
Likes: 1,943
From: Austin Texas
Originally Posted by SilverCoupe
I thought premium unleaded had a max. octane of about 94.
A) the gas does no harm to the engines
B) this octane level does not produce more power
C) in fact, you might loose a few ponys due to the slower burn rate of the higher octane
D) maximum power is obtained with gasoline that just barely does not ping or detonate and on the C6 this is in the neighborhood of 93 octane (R+M)/2.
Instructor
Joined: Jun 2005
Posts: 238
Likes: 0
Originally Posted by Matrix6028
I feel like I should treat my C6 with some high octane fuel - But I worry I might hurt the engine in doing so..
Is anyone using 95, 100, 100 or higher octane in there C6 now?
Is anyone using 95, 100, 100 or higher octane in there C6 now?
