At the pumps
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Misinformation galore
Words from one who should use premium. This post reminds me of the quip, "Don't confuse them with the facts, their minds are made up." If you "want to keep it ALWAYS in top running condition", make sure you continue to spend money on things that have ZERO influence on the "running condition" of your car. Just keep pouring coffee into that full mug.
What do you think you are preventing?
That is a good theory... If it applied, here.
If you understand your car, then you didn't understand the post. Once again, octane ONLY suppresses knock. If it doesn't knock, it doesn't need, want, nor can it benefit, from more octane. It is actually just that simple. When your coffee mug is full, what is the advantage to keep pouring? If you don't "get it", you may want to add some octane boost to your race gas in your non knocking stocker, just "to keep it ALWAYS in top running condition"
RACE ON!!!
What do you think you are preventing?
That is a good theory... If it applied, here.
If you understand your car, then you didn't understand the post. Once again, octane ONLY suppresses knock. If it doesn't knock, it doesn't need, want, nor can it benefit, from more octane. It is actually just that simple. When your coffee mug is full, what is the advantage to keep pouring? If you don't "get it", you may want to add some octane boost to your race gas in your non knocking stocker, just "to keep it ALWAYS in top running condition"
RACE ON!!!
MODERN engines with computer controls will AUTOMATICALLY adjust engine timing, etc. so as NOT to knock, depending on the fuel octane, rpm, engine load, and many other factors.
RESEARCH the facts and you will discover that engines that run best on premium fuel (Corvettes, Audis, etc.) WILL "run" on any octane but will NOT deliver optimal power and/or mileage.
Dyno tests have proven this simple fact.
If higher octane fuel is a waste then why do the oil companies even sell it?
Geez...
Instructor
Joined: Jul 2009
Posts: 238
Likes: 0
From: CA
an enthusiast is always in touch with his or hers vehicle, SOTP datalogging
motorcycle, whatever, back in the day, it was point gaps and backing off timing by feel, the gas thing is just more of the same mentality... either you get that or you don't, plain and simple science, that even i understand and i really don't know that much...
that's what separates the gearheads from the ppl not engaged in the "car culture" and just drives along from point a to b...
Last edited by SmokinRide; Sep 21, 2009 at 01:37 PM.
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
an enthusiast is always in touch with his or hers vehicle, SOTP datalogging
motorcycle, whatever, back in the day, it was point gaps and backing off timing by feel, the gas thing is just more of the same mentality... either you get that or you don't, plain and simple science, that even i understand and i really don't know that much...
that's what separates the gearheads from the ppl not engaged in the "car culture" and just drives along from point a to b...
motorcycle, whatever, back in the day, it was point gaps and backing off timing by feel, the gas thing is just more of the same mentality... either you get that or you don't, plain and simple science, that even i understand and i really don't know that much...
that's what separates the gearheads from the ppl not engaged in the "car culture" and just drives along from point a to b...
Burning Brakes
Joined: May 2009
Posts: 1,027
Likes: 1
From: Woodland CA
Found this short article, and they even mention the Corvette:
http://www.essortment.com/home/gasfueloctane_swej.htm
Auto maintenance: which fuel octane should you use?
Octane ratings and what they mean when it comes to performance.
Sponsored Links
Octane levels rate the different types of gasoline available. The number signifies the burning properties the fuel will produce when it reaches your engine. The standard octanes are 87, 89 and 91. The higher the octane rating the cleaner the fuel burns in your engine. Because of the clarity of the fuel, those with higher octane levels burn faster.
For cost effectiveness when gas prices are high, even if you normally use a higher octane, you can safely run your car on 87 octane and see no ill effects. In most cars performance won’t diminish. However, when used on a regular basis, over time there will be some amount of buildup in your fuel injectors. Because it is the lowest grade of fuel, manufacturers have designed all their vehicles to run on 87 octane. Auto makers will recommend that you use premium or supreme in some cars; but realistically the system is designed to run solely on 87 octane.
Both 89 and 91 octanes are faster, cleaner burning fuels that will help reduce and eliminate buildup on your fuel injection system. If you do a considerable amount of driving it would be wise to consider using these on a regular basis, because of the wear and tear to which your engine is exposed. High performance vehicles should be run on higher octane fuel to help keep the engine running in top condition. For example, you can safely run 87 octane in a Ford Escort for the life of the car and not really see any difference. However, if you usually drive a Chevy Corvette, 91 octane will be beneficial to you and the car. It’s safe to say that if you’ve spent that much money on a car you’re going to do everything you can to keep it in tip top shape.
What’s the safe grade for your car? If you do an average amount of driving; meaning you put the normal ten to fifteen thousand miles on your car each year, 87 octane will be fine. As a preventative measure, it’s a good idea to fill up with 89 or 91 octane once in a while. Once a month should be just fine and will accomplish a good cleaning of the fuel injectors in your vehicle. Any buildup will be removed and you may notice a change in performance and fuel economy as well. A good fuel injector cleaner or gas additive will do the same thing. Ask your local auto supply or mechanic to recommend one that suits your car and the performance you’ll want to get out of the treatment. If you choose the additive route, you’ll want to include it once a month as well just as you would a tank of high-octane gasoline.
For people who normally put substantial miles on their vehicle each year whether for work or otherwise, higher octanes will be beneficial to your vehicle. Just as oil changes extend the life of your motor, higher octane fuels help the engine to run smoother and reduce the wear and tear on the motor considerably in vehicles that are used a lot. Buildup from low octane reduces your fuel economy and makes the engine have to work that much harder to accommodate your driving needs.
The owner’s manual for your vehicle will provide the recommendations for your car. If there are any certain guidelines they provide you can follow those as well. Being that your car is the second biggest investment in your life, it’s best to listen to the manufacturer’s recommendations.
Octane ratings and what they mean when it comes to performance.
Sponsored Links
Octane levels rate the different types of gasoline available. The number signifies the burning properties the fuel will produce when it reaches your engine. The standard octanes are 87, 89 and 91. The higher the octane rating the cleaner the fuel burns in your engine. Because of the clarity of the fuel, those with higher octane levels burn faster.
For cost effectiveness when gas prices are high, even if you normally use a higher octane, you can safely run your car on 87 octane and see no ill effects. In most cars performance won’t diminish. However, when used on a regular basis, over time there will be some amount of buildup in your fuel injectors. Because it is the lowest grade of fuel, manufacturers have designed all their vehicles to run on 87 octane. Auto makers will recommend that you use premium or supreme in some cars; but realistically the system is designed to run solely on 87 octane.
Both 89 and 91 octanes are faster, cleaner burning fuels that will help reduce and eliminate buildup on your fuel injection system. If you do a considerable amount of driving it would be wise to consider using these on a regular basis, because of the wear and tear to which your engine is exposed. High performance vehicles should be run on higher octane fuel to help keep the engine running in top condition. For example, you can safely run 87 octane in a Ford Escort for the life of the car and not really see any difference. However, if you usually drive a Chevy Corvette, 91 octane will be beneficial to you and the car. It’s safe to say that if you’ve spent that much money on a car you’re going to do everything you can to keep it in tip top shape.
What’s the safe grade for your car? If you do an average amount of driving; meaning you put the normal ten to fifteen thousand miles on your car each year, 87 octane will be fine. As a preventative measure, it’s a good idea to fill up with 89 or 91 octane once in a while. Once a month should be just fine and will accomplish a good cleaning of the fuel injectors in your vehicle. Any buildup will be removed and you may notice a change in performance and fuel economy as well. A good fuel injector cleaner or gas additive will do the same thing. Ask your local auto supply or mechanic to recommend one that suits your car and the performance you’ll want to get out of the treatment. If you choose the additive route, you’ll want to include it once a month as well just as you would a tank of high-octane gasoline.
For people who normally put substantial miles on their vehicle each year whether for work or otherwise, higher octanes will be beneficial to your vehicle. Just as oil changes extend the life of your motor, higher octane fuels help the engine to run smoother and reduce the wear and tear on the motor considerably in vehicles that are used a lot. Buildup from low octane reduces your fuel economy and makes the engine have to work that much harder to accommodate your driving needs.
The owner’s manual for your vehicle will provide the recommendations for your car. If there are any certain guidelines they provide you can follow those as well. Being that your car is the second biggest investment in your life, it’s best to listen to the manufacturer’s recommendations.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Misinformation galore
And you seem to be one one of it's main contributors. It is bad enough to demonstrate your naivety, but to be guilty of that which you accuse others, plus argue points not made, make you look silly. Is your comprehension limited? Apparently you didn't "get it". Read and understand what I said, then reconsider your comments. This time, maybe you will be able to dispute what I really said, not what you misunderstood me to say.
I don't know who's pipe you are smoking, but at the risk of repeating myself... Nah! Just reread the last paragraph. Why should I get all worked up over a naysayer that doesn't even understand what I said and hasn't a clue.
Ya think??? You wouldn't have posted that, if you understood what I wrote.
Because there is one born every minute. P.T. Barnum and J.D. Rockefeller both had you in mind. If you get a clue... Write!
I see that my work is done, in this thread. The question was asked. The facts were given. The least informed don't even understand what I said, and some of those want to argue. As I said, it is foolish to state or argue facts with those whose minds are made up. The bull headed get what they deserve.
RACE ON!!!
Ya think??? You wouldn't have posted that, if you understood what I wrote.
I see that my work is done, in this thread. The question was asked. The facts were given. The least informed don't even understand what I said, and some of those want to argue. As I said, it is foolish to state or argue facts with those whose minds are made up. The bull headed get what they deserve.
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
So what twists your knickers? What gives with your post?
RACE ON!!!
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Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Geez
Instructor
Joined: Aug 2009
Posts: 218
Likes: 5
From: OR
It gets a little irksome when advice or a point is made and then those that can't, or won't, take the time to read and/or digest what was said, put words in your mouth and argue points never made.
So what twists your knickers? What gives with your post?
RACE ON!!!
So what twists your knickers? What gives with your post?
RACE ON!!!
RANT ON!!!
Team Owner
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Read the info that the man is sharing.
He's trying to save you from needless expenses.
We've been saying this for years on this forum, burn the 87 or 89.
Leave the 91 for LT-5'S and higher compression motors.
He's trying to save you from needless expenses.
We've been saying this for years on this forum, burn the 87 or 89.
Leave the 91 for LT-5'S and higher compression motors.
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
All I can say is that everybody laughed at Columbus too but in the end they all had to admit he was right. Maybe someday they will learn but I seriously doubt it. For that reason I am done with this thread.
Le Mans Master
Joined: Feb 1999
Posts: 6,470
Likes: 2
From: levittown pa. usa Even a bad day with my `Vette, is better than a good day at work
St. Jude Donor '10
I had a 97 Z28 & ran 87 octane in it.---Zero problems. ran great. I only use 87 octane in my `87 Vette.---again, Zero problems. Thats just my expierience. I guess I have the "if it ain`t broke, don`t fix it" mindset. Hey, to each his/her own. 
Racer
Joined: Aug 2009
Posts: 289
Likes: 1
From: Tucson Arizona
Some folks are making claims that premium is "cleaner burning" than lower octane fuels. How so? A quote from the Wikipedia "Top Tier" gasoline entry says: " While General Motors' "field guru" Andrew Buczynsky says that no one has identified the exact molecule in gasoline that causes engine buildup, he says that top tier detergent gasoline will remove the deposits. Without some level of detergents engine deposits form in most vehicles and this causes reduced fuel efficiency, acceleration, and power as well as increasing emissions and rough idling"
To qualify as a "Top Tier" gasoline all grades of that manufacturer's gasoline must meet the Top Tier detergent standards. If so, cleaner burning using any Top Tier fuel grade is not an issue.
I do spend the additional money (typically 4 to 5 cents per gallon) to use Chevron in my vehicles. Detergents may be "snake oil", but it's cheap snake oil. I will use the lowest recommended octane fuel in my '86 convertible (which appears to be 87 octane based on the fact that I cannot find any "premium" only requirements). If I experience knock/detonation I will switch to a higher octane fuel.
The L98 9.5:1 compression ratio is not particularly high. Aluminum heads and water cooling help the engine resist knocking. My Corvair (air cooled) 110 horsepower engine also has a 9.25:1 compression ratio but has problems even with 92 octane because of high head temperatures.
Steve
To qualify as a "Top Tier" gasoline all grades of that manufacturer's gasoline must meet the Top Tier detergent standards. If so, cleaner burning using any Top Tier fuel grade is not an issue.
I do spend the additional money (typically 4 to 5 cents per gallon) to use Chevron in my vehicles. Detergents may be "snake oil", but it's cheap snake oil. I will use the lowest recommended octane fuel in my '86 convertible (which appears to be 87 octane based on the fact that I cannot find any "premium" only requirements). If I experience knock/detonation I will switch to a higher octane fuel.
The L98 9.5:1 compression ratio is not particularly high. Aluminum heads and water cooling help the engine resist knocking. My Corvair (air cooled) 110 horsepower engine also has a 9.25:1 compression ratio but has problems even with 92 octane because of high head temperatures.
Steve