regular gas
Safety Car
Joined: Nov 2007
Posts: 4,144
Likes: 391
[QUOTE=cclive;1565577090]If you can find 130 octane gas, your C6 will put out 100 more horsepower and you can fly! The higher the octane, the more power it puts out! Has nothing to do with resistance to detonation...more money and more octane means FASTER and BETTER...........
Not true at all, with 130 it might make less horsepower. All gas has the same energy in btu per gallon. higher octane fuel has a higher resistance to preignition or "ping" as some would say. You would have to remap the ECM and raise the compression ratio to gain hp.
Not true at all, with 130 it might make less horsepower. All gas has the same energy in btu per gallon. higher octane fuel has a higher resistance to preignition or "ping" as some would say. You would have to remap the ECM and raise the compression ratio to gain hp.
Team Owner
Joined: Aug 2006
Posts: 57,804
Likes: 1
From: Portrichey FL
St. Jude Donor '13
If you can find 130 octane gas, your C6 will put out 100 more horsepower and you can fly! The higher the octane, the more power it puts out! Has nothing to do with resistance to detonation...more money and more octane means FASTER and BETTER...........
Now does this sound silly to anyone?
Now does this sound silly to anyone?
Drifting
Joined: Jan 2008
Posts: 1,558
Likes: 179
From: Payson AZ
Usually run 89 in my LS3 and no knock, have mostly used 87 grade in my LS1 and never knocked. Both have lots of get-up-go but do notice an improvement in LS1 when use 89 or 91.. and can put down a nice patch of rubber in LS3 with 89..
2 cents worth
Last edited by azcanuk; May 22, 2008 at 06:55 PM.
Safety Car
Joined: Nov 2006
Posts: 3,860
Likes: 5
From: Tampa FL
New member, first post so be gentle when you beat me up! I spoke with the corvette mechanic at the dealership. He said let your car dictate. If it runs fine on the cheap gas...use it! Listen for pings and such though. And a couple of time per year put in a bottle of fuel injector cleaner. I ran my 99 for 2.5 years with no problem. Now have an 06, run cheap gas and so far no problems. My normal driving is 5 miles per day in the city going to and from work.
Heel & Toe
Joined: May 2009
Posts: 17
Likes: 2
Regular fuel for 66K miles in C5 . . .
2002 C5 Coupe now has 66K miles. I have used regular fuel almost since new except when I take my car on the track. The engine is so lightly loaded that 87 octane works fine under everyday conditions -- only using 15-20% of engine power! The track is a different story. High engine temps and repeated full-throttle operation make premium a must. My car gets 24 MPG in mixed freeway/city driving in 60-80F weather. Worse when the weather is colder. Oil changes once per year at about 8,000 miles with synthetic. I know some people will say this is not conservative enough, but I expect to drive my Corvette another ten years with no engine problems.
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Melting Slicks
Joined: Sep 2009
Posts: 2,414
Likes: 214
From: Sarasota Florida
Burning Brakes
Joined: Jan 2005
Posts: 915
Likes: 3
From: Ft. Worth Texas
Every knowledgable bit of info I have read about my LS2 is that it is a pretty hardy engine, and regular 87 will not harm it at all.
However, I did buy this car for fun & not a commute vehicle, so I always put in premium unless faced with no other alternative. I do notice the performance & fuel mileage drop off with 87 the few times I had to run it, so for me it isn't worth saving a few bucks on a tank of gas to run regular.
However, I did buy this car for fun & not a commute vehicle, so I always put in premium unless faced with no other alternative. I do notice the performance & fuel mileage drop off with 87 the few times I had to run it, so for me it isn't worth saving a few bucks on a tank of gas to run regular.
Safety Car
Joined: Jul 2004
Posts: 3,867
Likes: 307
From: Wantagh,L.I. New York
I drive my Vette about 6200 miles per year. (one of 3 cars). If I was to use 87 vs. 93 it would save me $.25 cents a gallon. Assuming 17MPH,that would be 365 gal per year times $.25 per or $91. It's not worth it!
Le Mans Master
Joined: Mar 2009
Posts: 5,464
Likes: 1
From: Chicago
Your car. Your money. Only you can decide if it feels right to you. The car will retard the performance to match the reduced octane until it can't reduce it anymore. Once that happens you will get knocking and pinging. That can damage your engine. Pay attention to what the car is telling you.
I can't imagine that they put that in the manual just for kicks.The manual states the following:
Gasoline Octane
Use premium unleaded gasoline with a posted octane of
91 or higher for best performance. You may also use
middle grade or regular unleaded gasoline rated at 87
octane or higher, but your vehicle’s acceleration may be
slightly reduced. If the octane is less than 87, you may
get a heavy knocking noise when you drive. If this occurs,
use a gasoline rated at 87 octane or higher as soon as
possible. Otherwise, you might damage your engine.
I can't imagine that they put that in the manual just for kicks.The manual states the following:
Gasoline Octane
Use premium unleaded gasoline with a posted octane of
91 or higher for best performance. You may also use
middle grade or regular unleaded gasoline rated at 87
octane or higher, but your vehicle’s acceleration may be
slightly reduced. If the octane is less than 87, you may
get a heavy knocking noise when you drive. If this occurs,
use a gasoline rated at 87 octane or higher as soon as
possible. Otherwise, you might damage your engine.
Well stated Paul.
Heel & Toe
Joined: May 2009
Posts: 17
Likes: 2
Many may not agree, but I think one advantage of the Corvette is that it's not a "wimpy" BMW or Mercedes that must be coddled, serviced in a certain way. Corvettes are built to be driven and handle the situations we face in the USA without a lot of special handling -- and to me that means running on regular fuel or premium fuel without complaint! Thanks for your answer!
Race Director
Joined: Dec 2007
Posts: 19,574
Likes: 167
From: Frederick, MD
Dang, a two year old thread. It also started when gas prices seemed to be at it's highest before the market and gas prices dropped like crazy.
If you buy an expensive car that even recommends premium then maybe you shouldn't have bought it in the first place, especially a sports car which is usually bought for max performance. 20-30 cents difference per tank is about $5 a tank at the mostI really love it when people say they use regular and they have a $300-500 CAI installed.
If you buy an expensive car that even recommends premium then maybe you shouldn't have bought it in the first place, especially a sports car which is usually bought for max performance. 20-30 cents difference per tank is about $5 a tank at the mostI really love it when people say they use regular and they have a $300-500 CAI installed.
Le Mans Master
Joined: Mar 2009
Posts: 5,464
Likes: 1
From: Chicago
Dang, a two year old thread. It also started when gas prices seemed to be at it's highest before the market and gas prices dropped like crazy.
If you buy an expensive car that even recommends premium then maybe you shouldn't have bought it in the first place, especially a sports car which is usually bought for max performance. 20-30 cents difference per tank is about $5 a tank at the mostI really love it when people say they use regular and they have a $300-500 CAI installed.
If you buy an expensive car that even recommends premium then maybe you shouldn't have bought it in the first place, especially a sports car which is usually bought for max performance. 20-30 cents difference per tank is about $5 a tank at the mostI really love it when people say they use regular and they have a $300-500 CAI installed.
Back from the dead.
MONARTOR
Joined: Aug 2001
Posts: 249,983
Likes: 146
From: What I know, is dwarfed by what I pretend to know
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