Do you think me not using 93 octane at the track instead i was using 87 that this could effect my times... b/c i hear i should be running lower than 15.9s and this is the only thing that i can think of my car is running sweet lately so im guesing this could be the key either that or like a dirty head which im working on one to replace it with...
unless you changed your compression, use 87.
using higher octane does not give you more power. and its a waste of money.
the only reasons that you should use higher octane, if you have turbo, superchager, nitrous, or higher compression.
Im a Xbox 360 fanboy...and damn proud of it!!
I use super in mine.. Runs smoother, starts quicker, and peace of mind that this car has only ever had one tank of 87.(the tank I bought it with) It will also reduce the amount of carbon in your engine. over time it's ends up being worth it... and you prob wont have to use as much fuel injector cleaner. sure to YOU it dosent make a difference, but your not a piston or a spark plug.
My Sunfire
on warmer days its probably a good idea to use premium, why? well when an engine is heat soaked its more likely to have pre-detonation,using a higher octane fuel can help this from happening.
_______________________
** Flat Broke Racing Inc.**
or if u live in iowa where ethanol is cheaper
5secondrule wrote: I use super in mine.. Runs smoother, starts quicker, and peace of mind that this car has only ever had one tank of 87.(the tank I bought it with) It will also reduce the amount of carbon in your engine. over time it's ends up being worth it... and you prob wont have to use as much fuel injector cleaner. sure to YOU it dosent make a difference, but your not a piston or a spark plug.
Ok Super is only needed if you run higher compression, forced inductionf or knocking. The myth of hight octane being cleaner is a myth. That is a marketing gimick according to numberous reports all fuel has the same amount of cleaning detergents regardeless o fthe grade you use. If you think otherwise you have bought into the advertisements. I laugh every time says it is cleaner and research and shown that from many places they have the same detergents from tests. You have to becarefull because some gas station will run 89 even 87 in 93 octane pumps so in some instances you are paying 93 price for 87 octane. It is just hype.
Why do i know some of this i researched and i use to use 93 octane with that same premise now i have been using 87 and not problems my pistons and spark plugs are in perfect condition i know because i have done work on my car. You car just wasting money unless you have done and sort of forced induction, higher compression or even knocking.
2004 Grand Prix GTP (Competition Group)
SOLD-->1999 Z24 5M-
#30 to register on
JBO
"You can please some of the people some of the time but you can't please all the people'
all the time
high octane will mean the fuel will burn more quickly and and leave behind less deposits. And i never said it would hurt your motor, its just better for it. I would like to see this research that states that all grades of gas burn the same... I personally have played with lots of fire, enough to know that a cup of super will make a bigger flash and faster burn than regular gas. At least in a camp fire..
even if I'm paying a little extra for super, I still only use one tank of gas a week, and I only have to shell-out about $23 to fill up.
My Sunfire
www.howstuffworks.com
Keep posting if all you're planning on doing is making yourself look like an idiot. First thing you need to do is figure out what "octane" really means. It is not a unit of measurement for cleanliness, but, for lack of a better term, "anti-knock". This is achieved NOT by adding octane, but by adding other, less expensive additives. c.P, a gallon of 87 will be "cleaner" than a gallon of 93.
One thing I did enjoy was your scientific experiment. You lit a cup of gasoline on fire after having downed a few too many millers around the campfire, and came to the brilliant conclusion that your drunkened sense of sight is a far more reliable and accurate tool than the many laboratories all over the world. As it turns out chief, the lower the octane grade is on gasoline, the more power (in calories) it has. Think diesel. So in terms of raw power, 87>93.
So in reality, and totally contrary to what you claimed, higher octane will burn less quickly, will leave more deposits behind if being used in a system not designed for a high degree of control, and will thus be WORSE overall than the proper grade.
The only time I ever put super (sunoco 94) in my car is when I'm running the giggle juice. At all other times, it runs on 87.
__________________________________________
Quote:
Originally posted by MSD
I have an 03 5-speed Cavy, and when I race.. I shift at 6300-6500. That method (coupled with the fact that the guy probably couldn't drive for @!#$) allowed me to keep up with/have a slight lead on an 04 Mustang GT.
Exactly. Wow. I know in college i did up to Chemical Biology which was year ago and did not recall anything about gasoline of a hight octane burning cleaner. Exactly what was said above. Some people need to educate them selves before talking. I am not talking out of my ass. The octane really helps in most cars agains't knock that is why if your engine in knocking you move up to the next grade of gasoline. The fire analogy is a bunch of BS and has no relavence. The octane level is ablility to resist knocking so the more you resist knocking the more chance you have of not getting an efficient burn.
I should have really gone into chemical Engineering.
5secondrule. I am not talking out of my behind. I wish i still kept my Biochem book from college.
2004 Grand Prix GTP (Competition Group)
SOLD-->1999 Z24 5M-#30 to register on JBO
"You can please some of the people some of the time but you can't please all the people'
all the time
I love it when threads like this end up where they should and everyone learns from them.
I was all ready to jump into the fray but you guys have it covered.
Running any octane higher than what your engine requires is a colossal waste of money.
It's true that in some cases there ARE in fact more detergents and stuff added to the higher octane fuels. They'll do that to try and sell it to people that don't need it.
It does NOT burn cleaner because of them. Hell, it might be the detergents themselves that are raising the effective octane level by making the concoction more resistant to detonation. That would be funny.
The idea behind the detergents is not to help anything burn cleaner... it's supposedly to help keep the insides free of accumulations. It's not that the gas burns cleaner... it's just that the detergents would supposedly flush out the crap better. It doesn't... but that's beside the point here.
My point is that if you're running the higher octane due to the supposed additives then you're REALLY wasting your money. You're paying over 10% more for every fill-up when you could get BETTER results by simply running a bottle of injector cleaner through the system every time you change your oil. That will cost a LOT less and work better.
At the end of the day... gas companies LOVE people who need regular but buy premium. They know those ignorant consumers are just funnelling extra cash into their pockets for no reason at all. Sure... they like those of us who HAVE to buy high-octane as well... but at least we're getting something for our money.
Incidentally... I've got about 3/4 tank of 87 left and am wondering whether or not I should fill up again. Boost in 2 weeks. Gotta switch to 91 by then.
Higher octane doesnt burn quicker, just easier, so more burns. Thats why you need to use it if you have a turbo, super, or greater compression, cuz you need to make sure all the air is burnign to get your increased power.
Running higher octane every 4 to 5 tanks of gas can help clean your lines/engine. Thats all fuel injecter cleaner is... 110 octane gas.
If you use it all the time, however, it can be bad. If you dont have increased compression (turbo, super) there is not enough air for the gas to burn, thus, leaving more deposits in the cylinder.
Ours cars simply are not designed to burn a higher octane gas.
<IMG SRC="http://registry.gmenthusiast.com/images/neo32843/personal_pic.gif">
<A HREF="http://www.sandstorm-j.741.com" TARGET="_blank">Pictures and More</A>
<A HREF="http://www.crush007.com/love.cgi?id=1112583099dpm" TARGET="_blank">Love And Sex Life Prediction</A>
Couple of people said to me that the Eco use a higher compression and it needs a higher Octane... Im very sceptic about that. If GM said you should be using 87 at the gaz pump then I should. I tried Regular and Super and never or heard any different sound coming from the engine. Maybe with the new Cobalt SS 2.0L supercharged, they state it can run on 87 but I would run it on 92 just to make sure no knocking is coming out of the engine...
---------------------------------------------------------------------
My Car Specs
Club J-Body Montreal Forums
Quote:
Higher octane doesnt burn quicker, just easier, so more burns. Thats why you need to use it if you have a turbo, super, or greater compression, cuz you need to make sure all the air is burnign to get your increased power.
higher octane gasoline is not easier to burn...actually it is harder to burn. to put it simply...the higher the octane the higher the flashpoint or...the higher the temperature of the gasoline has to be before it will ignite. That is why you need it with higher compression or FI engines. FI has warmer air being mixed inside the cylinder and higher octane gas prevents that mixture from igniting prematurely. higher compression leads to higher temperatures in the cylinder and the higher octane will prevent premature detonation
Supercharged 95 BMW 540i M-Sport
elpaso- The cobalt ss requires 91+ octane, says so in the owners manual. lol
Our cars only require 87, also as stated in the manual.
<IMG SRC="http://registry.gmenthusiast.com/images/neo32843/personal_pic.gif">
<A HREF="http://www.sandstorm-j.741.com" TARGET="_blank">Pictures and More</A>
<A HREF="http://www.crush007.com/love.cgi?id=1112583099dpm" TARGET="_blank">Love And Sex Life Prediction</A>
the cobalt ss can run with 87, some people talked about it in the other cars forum.
after all this, just do a basic test on your car.
if it runs smoother with a higher octane than a lower, then use that.
for ME personally and my car, my car runs better on the mid grade 89 than the regular 87. 93 i think it actually runs a little worse than 89.
voila!
-----------------------------------------------------------------------
-----------------------------------------------------------------------
- Sold my beloved J in April 2010 -
WTF.... where did you people ever hear that higher octane burns better or easier or faster. Your all completely wrong. Why do you think it controls detonation? Detonation happens when temps get so high that the mixture ignites before spark, or you get a hot spot on the piston, and many other things. So why would you put somthing in that would blow up even easier? Higher octane is much harder to ignite, therefore controls detonation and pre-ignition. In a car that doesnt need higher octane (turbo, supercharched, nitrous, high comp.) your wasting money on higher prices and also on the unburned premium that spills out your exhaust.
5secondrule wrote:high octane will mean the fuel will burn more quickly and and leave behind less deposits. And i never said it would hurt your motor, its just better for it. I would like to see this research that states that all grades of gas burn the same... I personally have played with lots of fire, enough to know that a cup of super will make a bigger flash and faster burn than regular gas. At least in a camp fire.. even if I'm paying a little extra for super, I still only use one tank of gas a week, and I only have to shell-out about $23 to fill up.
yeargh... exactly the opposite!!
i think we better put this in the FAQ
<a href="http://www.lenkorules.com/"><img src="http://s93165229.onlinehome.us/images/zm/sig/LRDCsig3.jpg"></a>
Where do people come up with this crap???
Sandstorm: Please list where you got that info from or just tell us that you made it up out of the blue or your crazy uncle who "knows engines and stuff" told you so it must be true.
For the Cobalt SS... if anyone is running one on 87 then they should never have bought the car in the first place. It's likely that the car will run just fine on 87... because the knock sensors will sense the problem and richen the mixture and retard the timing to basically kill the power, bring down the temperature, waste some fuel, and not damage itself.
In that state of running, the fuel mileage drop will probably overcome the price savings on buying the 87 in the first place.
Unless of course, you're driving like a granny, in which case there'd have been no reason to get the supercharged engine in the first place.
I think there's really only two reasons for the existance of midgrade, 89 or so octane, gas.
Any new car I've ever seen requires either 87 or 91. Most take 87. High compression or boosted cars need 91.
So why is there 89? First and foremost, it's to extract money from the tools who think higher octane gas is somehow "better" gas but don't want to spend the money on the premium. They think that the mid-grade is just a little better than the "crappy" low-end stuff but feel they're being frugal by not going "all the way up" to the premium.
Hell, this is only exasperated by the gas companies labelling of the different octanes. Around here, you get "Bronze, Silver or Gold" or some other form of "Ok, Better, Best" nomenclature that implies that the higher octane gas is somehow better. It's all about getting your money.
The only time I think someone might benefit from 89 octane is if they've got an older engine with a lot of carbon buildup or something which has effectively increased the compression. Those are known to run better with higher octane since the buildup can cause detonation and set off the knock sensors.
Note, however, that having run higher octane for the life of those cars would not have prevented that condition. Perhaps a shot of injector cleaner every oil change might.. but as mentioned... higher octane gas does not burn cleaner or more completely.
And injector cleaner is NOT simply 110 octane gas.
Where do people get these ridiculous ideas that premium fuel burns cleaner.
I have dynoed my car with 87 and 93 oct. fuel.My car made 3 more hp with 87.
DONT RUN premium fuel unles you are spraying or super/turbo charged.
C'mon ppl its common sence GEEZ!!!!!!!!!!!!!!!
Quote:
C'mon ppl its common sence GEEZ!!!!!!!!!!!!!!!
some people dont have that
Im a Xbox 360 fanboy...and damn proud of it!!
