gas
 

Sorry if this is somewhere already but I was unable to find. . Question is what gas do you use reg mid or premium or other and do you notice a difference....

I always use 93. This motor has pretty high compression. Definitely don't use less than 91. Using too low of an octane will cause detonation in the cylinders (this is a bad thing).

I mean, doesn't the manual say use premium only?

Before someone sends the obligatory :sign0012: ,premium and nothing but. Minimum 91, but, 93 is recommended.

93 all day.

Doesn't it say it inside of the gas cap as well?

believe so

Yes it does, just checked!

http://i1225.photobucket.com/albums/...psc37565a7.jpg

On a side note, I now know it's called a "fuel filler gun".

To elaborate on the why:
The difference between octanes is not necessarily more power, it's stability. Higher octanes are more resistant to preignition (knock, ping, detonation, etc), Which is where the mixture may ignite prematurely and momentarily force the crankshaft backward. This is bad, and could eventually lead to the engine beating itself to death. Higher octane ratings allow more aggressive tuning (spark timing, fuel ratio, higher compression, forced induction, etc) because the mixture will ignite when the spark is fired, not a moment before. The ECU has a window for some of these parameters, and it will reduce their values if it detects preignition. If it detects none, it will continue to improve it's parameters until it reaches it's programmed limit. More aggressive tuning is what makes more power, whereas a higher octane rating is simply what enables it.

As everyone has stated, for the 86, "premium" fuel (91+) is necessary for the engine to perform well. Lower octanes could preignite, and cause the ECU to retard timing and run a little richer.

:clap:

Use super essence only. Because ordinary essence isn't enough.

also we put in a liquid so its pretty silly to call it gas.
call it petrol or fuel instead.

http://en.wikipedia.org/wiki/Fuel#Solid_fuel

or go all out on the JDM train:

ガソリン

lol, "petrol" and "fuel" can be just as ambiguous as "gas" if you want them to be. Your own source lists "gasoline" in the liquid category as a secondary terminology. Not sure if troll or..........

I did notice while driving thru south dakota last year I couldn't find any gas above 87!!!!!

European

I am half expecting a RON vs. AKI argument to follow my post...

RON all the way baby ;-)

RON is just big numbers. I'll stick with AKI, thanks. :)

As for Regular vs Premium, this discussion's been gone over a few times already. The different at fill-up is only a couple dollars. IMO, if you can't afford that, you can't afford this car.

must...... read ...... manual ......

But we're calling it "gas" short for gasoline. We're not referring to a physical, gaseous, state.

:thumbsup:

91 works. 94 gets me more power and better mileage, but not enough to justify the 25% price increase.

All we have is 93 here in the southeast:happyanim:

lower octane at altitude (such as Denver at 5000ft+ and typical 91 oct), is actually OK to use simply due to less ambient air density. Less air means there is less mass to compress, and less fuel is required to maintain proper mixture. So, overall, less heat is generated and preignition is less likely. Most stations around here sell 91 at the highest, a rare few will have higher.

Not a troll, just a European who doesn't get American English, lol.

Highest I have around here is 91..... At least the stuff i'm using doesn't have any ethanol I guess, and it performs quite well and haven't had any engine knock or anything. I just make sure I visit the busy gas stations which happen to be close to home.

Here in cali we get the worst... 91 octane max normally and up to 10% ethanol.

"Gas", abbreviated from "Gasoline"
"Petrol" abbreviated from "Petroleum Distillate"
"Essence" ?

I want 93 octane. :(

Eh, until someone posts dyno sheets I doubt that you'd notice using your butt. My money is on < 5hp increase at most. I'd certainly buy it if it was available but I'd consider using 91 for daily driving.

I agree, but it'd be nice to have better options around here.

I think he meant the mixture of aether, phlogiston and unicorn farts from the thaumaturge next the local pub.

Swedes aren't Europeans. They are Scandinavians. That's like calling someone from the US a "North American".

I use non ethanol 91 octane only pure-gas.org tells you locations with pure gas ethanol is terrible unless your car is setup to handle all of its downfalls ( better fuel pump,correct fuel Injectors, fuel lines made to withstand it and proper tuning) and most. 93 octane gas is simply 91 octane with ethanol added to it to increase the octane rating just an FYI

I'd be surprised if there were any difference at all, honestly, especially if you aren't at sea level. The only reason there would be a power difference would be if the lower octane caused detonation (and thus the ECU had to retard the timings a bit). 91 should be high enough to avoid that except in possibly extremely hot, sea-level conditions. As was mentioned by a prior poster, here in Colorado, 91 is as high as it gets (since the altitude reduces octane requirements).

Someone from the U.S. is a North American.

Yes, that's the point. But we call someone from the U.S. an "American".

Same here in Arizona, wish I could get 93 prefer to be at recommended not min

Now you're sucking in two whole continents 8)

Well, some would say it is an imperial prerogative.

But actually it is legitimate, since the USA is the only nation on the two continents that has "America" in its name.

E.G. "Brazilians" are from the "United States of Brazil".

Where do you find grades higher then 91? That's all I have around here in northern San Diego , is 91 ok for the long run?

Did you forget about Central America?