what kindda gas do you guys use? and octane #

89..
mobile

Mobile or Cheveron. And always Octane 91. Doesn't have anything to do with trying to get performance outta the car. I just do it because I hear that 91 Octane is better for the engine because it burns cleaner and leaves less deposits.

And I try to do the best possible things for my car.

mobil only. if no mobil, then 76. I hate chevron and arco.

... 87

shell / texaco or mobil .......... 89 and 91 every 6 months

I vary mine. . I most always get Amoco/BP gas, because my dad works there on Saturday nights and he pays for it!! :-P.

Most of the time it's the low grade, 87 I think. . .
Every once in awhile I'll throw in some 89 stuff with the ethanol..

Then once in a blue moon, if I run outta gas mid week or am not able to stop in on Saturday and I have to fork over the money for my own gas. I'll get the 91 stuff. .

mobil-87

I still don't understand why people put more than 87 in a civic unless they are running FI. 87 octane is all you need.

for the love of God.... DIE SUBJECT DIE!!!!

this subject has to have been discussed 1000x already, search if you don't believe me! All you dumb asses that use >87 octane on a NA Civic are throwing so much fawkin money down the drain! The fact that you think 89 or 91 is better for your car proves you don't know the first thing about how engines work

I always thought 91 octane was the way to go also. But then I read that 91 actually doesnt burn cleaner since it has more chemicals in to help stop detonation(pinging).

Dunno.. so I just use mid-grade heh.

that's why Honda recommends 87, right?

Anything over 87 octane for a stock CIVIC is a waste of money. if you THINK
it's better for your car.. it's all in your head.

Higher octanes burn no cleaner than 87, and vice versa. All gasolines have at least the government minimum of detergents in the gas to do that job...hence why yes, some BRANDS of gas ARE better than others...Shell and Mobile being at the top of the list in quality. If you want clean gas, do research to find where the detergents are.

The ONLY purpose of a higher octane gasoline is to prevent detonation in a higher compression engine...of which a NA Civic is NOT! The reason sports cars regularly use high octane gas is because their engines were designed utilizing a high compression ratio... ie. RSX-S, S2k, etc... Using a higher octane gas will not turn your car into a RSX-S or S2k(obviously)... it's simply a requirement for THOSE engines.

But hey, we Civic drivers will never accept the fact that our cars are not Lambos and Modenas...
We buy an econobox and think we have a sports car.

mobile 89

haha, good point.... nevermind what I said everybody.... fill up with some 100+ octane, trust me you'll run 13's

i run 93 octane, because of the nitrous

89

I go with 93 here in the east coast. I figure if I spend so much time working on and sriving my car, why not give it the best. The higher grades are also cleaner for the engine. Think of the prolonged use on the engine and what you're putting into it. My $.02

you seem to know what you're talking about

you don't

if you think I'm making this all up, check out http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm ... if the Federal Trade Commission isn't a reputable source, I dunno who is!

JSWhaler, you may very well be hurting your car. Theres been a strong correlation between people that use higher than recommended octane and catalytic converter damage. My dad, who used to be a mechanic, yelled at me years back when he found out I was putting 91 into my Cavalier... that's when he told me this... researched it further for myself and I've found similar stories.

theres no point in runnin over 87 unless ur f/i...why else would 87 be recomended for our cars if we needed more????

87 exxon. sometimes ill go with shell, even though I get worse gas mileage.

Methane, depending on whether I eat Japanese of Mexican. Seriously, 87 from quiktrip. 86 is the recommended grade but I'll be damned if I can find that. **** has more octane than that.

um... i mix... this is bad, YES?

93 octane for my car Shell/Texaco only because i have a card
Which my parents pay for hehehe

87 from where ever its cheaper.

92 or once and awhile 100

It's not bad if the resulting mix is >= your required octane. So if you mix 87 and 89 octane and your car requires 87 octane, that's ok. Mixing 89 and 91 octane when your car requires 91 octane is bad.

This topic has been discussed at least half a dozen different times over the past year in about 3 different sections of the forum.

Several people have already correctly pointed out that using 89 or 91 octane gas in your Civic does absolutely nothing for your car and is just pissing money away.

I have no doubt that in a few weeks someone else will start the same thread and a dozen people will chime and once again beat this topic to death.