C6 Octane Requirements ?
10-14-2004, 12:17 PM
#4
Racer
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Owner's manual says 91 octane and above . It says the car's computer will adjust the timing to run on regular or mid-range to prevent knocking but not to make a habit of it . 
10-14-2004, 12:17 PM
#5
Team Owner
I'm using BP/AMOCO, premium, 93 octane.
The owner's manual says to "Use premium unleaded gasoline with a posted octane of 91 or higher for best performance." But it also says you may use lower octane gasoline, but your vehicle's acceleration may be reduced.
It says that if you use gasoline with a lower than 87 octane rating, you may get a heavy knocking noise when driving. If you use gasoline with an octane rating lower than 87, it recommends that you use 87 or higher as soon as possible.
There's also a full paragraph on California gasoline and California emission standards.
The owner's manual says to "Use premium unleaded gasoline with a posted octane of 91 or higher for best performance." But it also says you may use lower octane gasoline, but your vehicle's acceleration may be reduced.
It says that if you use gasoline with a lower than 87 octane rating, you may get a heavy knocking noise when driving. If you use gasoline with an octane rating lower than 87, it recommends that you use 87 or higher as soon as possible.
There's also a full paragraph on California gasoline and California emission standards.
10-14-2004, 12:18 PM
#6
Racer
Thread Starter
In the MI area Sunocco carries 93 & 94 octane.
Originally Posted by Runesabre
What stations provide 94 octane? I've been trying to find one but all the ones in my area (Chevron, Exxon, Citgo, Shell) only offer 93 octane.
10-14-2004, 06:53 PM
#8
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St. Jude Donor '03-'04
with 10.9:1 compression 93 octane will work the Ls1 with 10.5:1 compression is having problems with 91 octane.. especially in the summer..
10-15-2004, 12:32 PM
#11
Drifting
Originally Posted by RedC6Coupe
I'm using BP/AMOCO, premium, 93 octane.
The owner's manual says to "Use premium unleaded gasoline with a posted octane of 91 or higher for best performance." But it also says you may use lower octane gasoline, but your vehicle's acceleration may be reduced.
It says that if you use gasoline with a lower than 87 octane rating, you may get a heavy knocking noise when driving. If you use gasoline with an octane rating lower than 87, it recommends that you use 87 or higher as soon as possible.
There's also a full paragraph on California gasoline and California emission standards.
The owner's manual says to "Use premium unleaded gasoline with a posted octane of 91 or higher for best performance." But it also says you may use lower octane gasoline, but your vehicle's acceleration may be reduced.
It says that if you use gasoline with a lower than 87 octane rating, you may get a heavy knocking noise when driving. If you use gasoline with an octane rating lower than 87, it recommends that you use 87 or higher as soon as possible.
There's also a full paragraph on California gasoline and California emission standards.
The above information is correct.
========================
I have now tried 87 and 93 in the C6. I can not tell ANY difference in performance and the mileage is the same. I have ~1150 miles on it now.
I got exactly the same results in the 04 coupe.
This is an emotional issue -- well discussed.
However, I do use 93 when I go to the track.
10-15-2004, 02:01 PM
#12
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Exactly which of the statements made by RedC6Coupe you quoted is "incorrect"? They were all either a statement made about what he/she uses, or quotes and summaries from the owners manual. The warning in the owners manual refers to using fuel with less than 87 octane rating - have you used that also?
10-16-2004, 01:55 PM
#13
Drifting
Originally Posted by vetterun
Exactly which of the statements made by RedC6Coupe you quoted is "incorrect"? They were all either a statement made about what he/she uses, or quotes and summaries from the owners manual. The warning in the owners manual refers to using fuel with less than 87 octane rating - have you used that also?
You having a bad hair day dude or can't you read?
Probably just can't read ... and you are "incorrect" ... not RedC6Coupe.
02-06-2011, 01:09 PM
#15
MONARTOR
