sensfan1111

Eggs,

Do you recall this post at all??

You carried on busting Tex's *****, then posted this 15 hours later...

If this isn't thread jacking, I don't know what is.

I hope Tex does come back to see what you wrote so he can see just how much of a hypocrite you really are.


Back on topic, I have run both 87 and 91 and didn't notice any difference.

Shift_A32B

iTrader: (14)

Since when is 91 a higher quality than 87

I always thought higher octane = the more compression the fuel can withstand before detonating.

Rods03Max619

iTrader: (5)

91 Octane if in Cali, any other state go with the 93 if they have it....

litch

iTrader: (2)

Kryogen

Wow this thread has jumped out of proportion.

I think we covered the topic.

twentyeggs

Well you at least have 1 brain cell in that head of yours for realizing how hypocrisy works and can do a little math. If you had 2 maybe you would have realized my comment was not a sincere excuse, but rather a polite way of saying: "F*** off, you're a arrogant d*** and i don't want entertain you in a friendly way because we have something in common."

sorry for the challenging abstraction... I understand some things are hard for people to understand.

Second, bro, the dude did see that and he did notice what you pointed out and its killing him not to chime in . But he is way too prideful to let others know he actually has no life on that **** hole island and that his statement of leaving the thread without lurking is something he can't really do.

If he actually does leave the thread and he isn't reading this right now, than i would be slightly wrong about him and actually slightly impressed. Maybe that would entice a "Fellow F-Bod" guy like me to actually have a friendly conversation with him ....not

+1

That is all octane means. We need a hit the nail on the head smiley.

Hey! when do you become a mod????

....yeah i know... I am way

But corvettes are boss!!!

SENSFAN1111 this is for you since you think there is still something to talk about.



In the automotive world, there are many common myths, which are repeated so many times that, after a while, they eventually transform themselves into ‘facts.’ Unsurprisingly, many of these ‘facts’ have to do with gasoline, whether they be regarding fuel mileage, power possibilities or some other arcane aspect of the internal combustion engine. Gasoline can be a confusing topic, and it is easy to make assumptions about it that may seem logical, but which on closer examination, turn out not to be true. A perfect example of this practice can be seen with octane ratings.

What are octane ratings? Simply put, when you pull into the gas station and are presented with the array of different fuel grades that you can pump into your car, the numbers written above each button or nozzle indicate that particular grade’s octane rating. Typically, the range will run from 87 octane on up to 93 octane.

In the world of automobiles, it is tempting to associate higher numbers with higher quality . After all, more horsepower and more miles per gallon are a better thing, which feeds into our perception that more impressive octane ratings also equal higher performance. Gasoline companies understand this mentality and do nothing to dissuade drivers from it, labeling 87 octane gas ‘Regular,’ and 91 or 93 octane ‘Super’ in an attempt to reinforce this way of thinking. After all, since ‘Super’ is priced higher than ‘Regular,’ it’s in their best interest to convince as many people as they can that paying a bit extra means getting better quality gas.

Unfortunately, this is where the myth of what gasoline’s octane rating really means creeps into the picture. Time and again, people will be told that high octane fuel burns cleaner or more completely, and that it will give them extra power and better fuel mileage than Regular octane gasoline because it contains more ‘energy.’ These blanket statements are simply not true. In fact, the octane rating for gasoline has nothing to do with the amount of power locked inside of it – it actually relates to just how much a fuel can be compressed before igniting. The higher the number, the less likely it is to ignite under pressure.

Now educate yourselves

Why would anyone want to produce a fuel that was actually harder to ignite once inside an engine? To understand the role that octane ratings and ignition pressures play in a motor, it helps to be familiar with the term ‘knock.’ Essentially, when gasoline is sprayed into a cylinder by a fuel injector and mixed with oxygen, engine designers expect it to remain there in vapor form until it is time for the sparkplug to light it up, causing the explosion that drives the piston down to generate horsepower. The timing of this explosion is critical, as gasoline that ignites too early causes ‘knock,’ which reduces engine output and efficiency and which, in worst-case scenarios, can actually physically damage an engine.

In most engines, knock is rarely an issue because the compression ratio – that is, the pressure that the air/fuel mixture is put under in the cylinder – is low enough that Regular gasoline’s octane rating is sufficient. There is absolutely no benefit to running Premium fuel in a standard motor, since it will never be able to take advantage of that gasoline’s higher knock resistance. However, more aggressive engine management schemes, especially those found in turbocharged or supercharged vehicles, can turn up the compression to a high level, requiring much higher octane gasoline to avoid knock.

How can you know whether your car actually requires Super gasoline or whether it can get by on Regular? Almost every vehicle will list the octane rating necessary to run it safely inside the owner’s manual. Some luxury or sportscars might even place a small reminder on the gas gauge itself stating ‘Premium Unleaded fuel only’ to make sure you don’t forget.

To wrap things up: no, you won’t see a power or fuel efficiency increase by running high octane fuel in an engine that has been tuned and designed for Regular gas, nor will doing so perform any extra ‘cleaning’ inside the motor. On the flip side, running low octane fuel in an engine built for Premium can increase the risk of engine damage and will certainly impact that unit’s overall performance. The next time someone tries to pass these myths off on you, you can try explaining to them how octane ratings really work<---- Is that not what I DID??! ARE YOU NOT ENTERTAINED!!!

Amerikaner83

iTrader: (17)

Nice copy and paste job, mind citing your source? Thanks.

"...tuned and designed for regular..."

Which might I point out, our Maximas are NOT designed for regular. They run optimally on premium, and I personally have seen a mileage increase with premium in my Max. 20% better mileage as a matter of fact.

If they didn't perform better on premium then they wouldn't have the "premium fuel recommended" sticker on the fuel door and in the manual.

twentyeggs

I've already cited it in several posts back but here it is again. This is for people who can't click links lol
http://www.nicoclub.com/archives/gas...ane-myths.html

And you are very correct sir, our cars are made to run on premium and because they are made for it, they are more efficient in using it. Thus your gas mileage increases. There is no magic or sorcery behind it.

However, our cars do have the ability to adjust for lower octane so that it doesn't get damaged by all the penny pinchers out there who don't believe in paying for premium even though, as you said, it SPECIFICALLY says it should be used. It still does not make up for the fact it runs better and more efficient on 91. that is what it is balanced for. I would say 20% is not accurate. That is quite a lot. With the ability to adjust you will be losing a maximum of 5% which is still a very generous estimate.

The issue here is people who use premium on low compression cars because they think the word "premium" literally means higher quality than the lower octanes.

CRiME

iTrader: (21)

20eggs in another epic battle on the 6th gen forum. This can only mean one thing: All is well on maxima.org.

po8pimp

This is just getting good, can we please keep to normal text color as this hurts my eyes to read. please don't let my comment in any way stop you from continuing this most excellent argument.

twentyeggs

hahahaha!! yeah it's been a while

all is well

twentyeggs

I kinda backed the dude in a corner. If he came back now it would be shameful

The Wizard

iTrader: (43)

boatguy272

No, its having a nice conversation with some people until some ******* who owns a 99 comes to the 6th Gen section to start chit

boatguy272

Yup,,,not a lot of room under there for sure !!!

Ok,,, better not talk Corvettes anymore,,,,don't want to get yelled at by the forum police

Amerikaner83

iTrader: (17)

I measured it in my car after I bought it. The previous owner used regular in it all its life. I changed teh fuel filter and ran regular as well through 5 tanks, got an average of 17 MPG.

Then I switched to premium and after 5 tanks my average crept up to 21.

From 17 to 21 is 4 MPG, which is a bit over 20%. So I don't care if "you would say 20% is not accurate"...for I actually measured it, and for my car it was accurate. So you can pontificate all you want, but when faced with the cold hard TRUTH... I'll just leave it out for you.





but the original post was not about higher quality gasoline...as you and I both know (and you have agreed with me) that our cars run better on premium because our cars are tuned for it.

So what's the actual problem?

twentyeggs

look man, first off you can't measure anything unless you have a controlled environment and an unchangeable fixed value to reference and compare. You don't have a control in your experiment. Your foot is going to press on the gas peddle in congruence to your mood and situation on the road. You are going to accelerate different every day you drive that car, at every stop sign, stop light, every merge everything. You cannot drive the same way unless you are a robot, and you cannot measure anything unless you drive the same rout with the same stops with the same acceleration with the same traffic doing the same speed, with the same temperature outside, with the same weather conditions ect... The variables that can have a huge effect on the conclusion of your hypothesis are endless. The only way to get CLOSE and give a general ballpark estimate of your MPG is if you are driving several hundred miles on the highway where there is NO city driving, and you use cruise control to speed up and slow down while there is 0 traffic so you can continue going the same speed. THEN the way to measure it is by filling up your tank. Logging how many miles you traveled, the refill your tank and log the gallons you put into it, then do your math. You can't just let some computer (which is known very often to be wrong) to say you gained an average of ect... You cant measure MPG in the city when the difference of 4mpg means 20% more efficiency. That is a huge number. My average is about 25mpg give or take 10mpg.

Second, that meter in our car is not a trust all perfect little device. You can only measure gas by the physical gas in your tank.

Third what fuel filter are you talking about? i think you are full of it because we don't have accessible fuel filters, did you rip out the entire gas tank? and replace that? because that is where our filter is.



this is a pic of mine. You and I both know maximas don't get 40+ mpg. I was driving at a slight decline for an hour on my trip from SoCal to NorCal. on the way back I get more like 25. I always drive between the hours of 10pm-4am because there is 0 traffic and i always use cruise control. My trips are much more stable and true than yours and my range is so radically different because of the direction I go.

Amerikaner83

iTrader: (17)

That's why I averaged out over 5 tanks...which is about 2 months of driving. Winter blend gas. Same route to work and back...mainly city driving. And yeah, I have a 99 so the fuel filter for me is accessible.

And BTW I measured my MPG the right way. using math. I don't have a computer to lie to me and tell me what I'm getting.