What kind of gas do you use in your car?

[RedSiBaron]

haha. all octane is, is the antiknock properties of the fuel. here are a few reasons to switch to a higher octane, or things that would require different octane ratings

• high compression
• advanced timing
• leaner a/f ratio

if you are running a stock k20a3 which requires regular grade fuel, you will not see an increase in performance or any better millage by running mid grade or premium fuel. and, any change in the "smoothness" of your motor is all in your head.

the way i see it, its a plus that the ep runs regular and is as fun to drive as it is. all the cars that came out at the same time as the ep that were in the same class required premium.

coulda sworn there was also something to do with the flame propagation...but i guess i could just be crazy...which is very likely

[mrpotatohead]

93 octane

[Twisted-X]

I was always told that the higher the octane the slower the fuel burns, which to me would mean that its less likely to prematurely explode (due to high compression or carbon build-up on the piston heads=knock) before the spark plug ignites it. I've been using 89 octane Shell lately because subconsciously I buy the "v-power" BS

[RHCP0801]

with gas at $4.09 for 87 im using 87 lol, some places are $4.11 and more

[shllipperybert]

i use chevron w techron ahaha good for the i-vtec

[AllSlowNoGo]

I use regular

[irrational]

89 from cheveron or 76

[skoo74]

91... pricey but yummm premium

[irrational]

91... pricey but yummm premium

Blah..........Misa Campo is "yummm premium"

[ryko]

the cheaper the gas....the better (on my wallet)

[itsanep3]

I use 93 from Chevron, or BP on some occasions. Can't use anything less with boost...

[bunk]

87 FTW until I get my swap.

[matdbom]

shit, my broke self uses 87

[chewie_jrc]

Just graduated college, still have loans to pay off...I'll be using regular for awhile :)

[EPandaman29]

mobil 91