What Octane Fuel do you run in your 3gee?

[forrest89sei]

just wondering what octane fuel you guys run?

I run 89 (In California)

[A18A]

91, its the only 1 we got here, and isnt there already another thread about this? :P

[snoopyloopy]

california 91 octane from the 76 station on the corner of anderson street and redlands boulevard in loma linda, california.

[labeledsk8r]

i was runnig 91 till i made the trip to maine wich i knocked it down to medium grade to save some cash on the trip, then when i got here it broke down so right now its getting fresh air only lol

[MessyHonda]

just wondering what octane fuel you guys run?
I run 89 (In California)

my mom would run 89 on the dx ever since she got it.....later the car did not run right and we would put 91....it did not help...it was all in my mind. anyways...now that i work....i put cheap gas in....87.....i just heard that i should put some seafoam....so it can clear up all that build up...anyways ima go get some tomorrow maybe pick up a claybar kit.and wash it so monkey or legend can make me a sig.

[MessyHonda]

california 91 octane from the 76 station on the corner of anderson street and redlands boulevard in loma linda, california.

its its going to be like that....i fill up in San Mateo...the gas station is called Gas&shop. its on delaware and 4th ave....they have a taco bell real close....btw im hungry...lol...i need some tacos tonight:eatarrow: :naughty:

[RamThis]

87 octane. The lower the octane you can run without detonation, the more power you will make. Higher grade gas does not make your car run better unless you have an OBDI or OBDII car with a knock sensor that retards the timing if it senses octane ping. All octane really means is how volatile the gas is, lower octane, more volatile, meaning it will combust sooner than a higher octane fuel will, effectively advancing timing just due to it's easier to ignite nature.

High compression engines need high octane fuel because it's combustion is easier to control, meaning it wont ignite from just compression and heat alone, the spark of the plug has to be it's source of combustion.

[mkymonkey]

<<<< cali 87

[labeledsk8r]

87 octane. The lower the octane you can run without detonation, the more power you will make. Higher grade gas does not make your car run better unless you have an OBDI or OBDII car with a knock sensor that retards the timing if it senses octane ping. All octane really means is how volatile the gas is, lower octane, more volatile, meaning it will combust sooner than a higher octane fuel will, effectively advancing timing just due to it's easier to ignite nature.
High compression engines need high octane fuel because it's combustion is easier to control, meaning it wont ignite from just compression and heat alone, the spark of the plug has to be it's source of combustion.


just in my defence lol i have bad pinging whenever i give it more then half open, and timeing had been checked over and over, just depends how lean you run aswell wich seemed to work out for me running leaner with more octane, just deffending myself lol

[snoopyloopy]

87 octane. The lower the octane you can run without detonation, the more power you will make. Higher grade gas does not make your car run better unless you have an OBDI or OBDII car with a knock sensor that retards the timing if it senses octane ping. All octane really means is how volatile the gas is, lower octane, more volatile, meaning it will combust sooner than a higher octane fuel will, effectively advancing timing just due to it's easier to ignite nature.
High compression engines need high octane fuel because it's combustion is easier to control, meaning it wont ignite from just compression and heat alone, the spark of the plug has to be it's source of combustion.
when i switched from 87 to 91, i didn't notice that much of a difference. it wasn't like going from a car limping on 3 cyl to a perfectly purring vtec motor. but it was noticable, mostly in the car running a little smoother. and i also got an ever so slight increase in mpg.

[carotman]

The stock A20A is designed to run on 87 octane. OD, you have 91 there cause they use the RON method calculation. Here, we have RON+MON/2

I use 87 octane in the A20A and 91 in the B20A.

[BITESIZE]

It's had the same 1/2 tank of 87 gas that it had in April...:(

[frantik]

87 ftw!!! no need to spend extra money on octane that the engine doesnt need

[3ghondaerodeck]

I run 95, in Holland we don't go lower, every ones in a while I go with the shell V-power that's 98 (whenever I'm in Germany I go with the german v-power that's 100 101 I think)

[GhettoNoodles]

I run 8 oz of Chicken broth with 87

[MessyHonda]

I run 8 oz of Chicken broth with 87

i heard you get like 45mpg with that....and your car smells cleaner...kinda like burning vegi oil on a diesel

[A18A]

OD, you have 91 there cause they use the RON method calculation. Here, we have RON+MON/2
huh? i googled that but didnt really find anything helpfull

[GhettoNoodles]

nothing like chicken down the carb!

[frantik]

huh? i googled that but didnt really find anything helpfull
wikipedia is your friend


The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel through a specific test engine (http://en.wikipedia.org/wiki/Engine) with a variable compression ratio (http://en.wikipedia.org/wiki/Compression_ratio) under controlled conditions, and comparing these results with those for mixtures of isooctane and n-heptane.

There is another type of octane rating, called Motor Octane Number (MON) or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing (http://en.wikipedia.org/wiki/Ignition_system) to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON. Normally fuel specifications require both a minimum RON and a minimum MON.

In most countries (including all of Europe (http://en.wikipedia.org/wiki/Europe) and Australia (http://en.wikipedia.org/wiki/Australia)) the "headline" octane that would be shown on the pump is the RON, but in the United States (http://en.wikipedia.org/wiki/United_States) and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 8 to 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US (http://en.wikipedia.org/wiki/United_States) and Canada (http://en.wikipedia.org/wiki/Canada), would be 91-95 (regular) in Europe.

http://en.wikipedia.org/wiki/Octane_rating

[Hash_man_Se_i]

I run 87 octane. No point in running anything else like RamThis said its just a waste of money to run anything else. Bare in mind if you turbo your motor or whatnot, then 91 would be a good idea... but on a pretty much stock a20 there is absolutely no reason to run anythin more than 87

[Civic Accord Honda]

87 unless there out then i get 89 if we got 89 in my old accord it got 45mpg but it really stunk and smoged all up in here

[A18A]

I run 87 octane. No point in running anything else like RamThis said its just a waste of money to run anything else. Bare in mind if you turbo your motor or whatnot, then 91 would be a good idea... but on a pretty much stock a20 there is absolutely no reason to run anythin more than 87
you guys should send me a few barells(sp?) of 87... lol and heres me thinking i could just water down 91 to a lower octqne :P

[frantik]

^ did u see my post? your 91 is our 87

[A18A]

^ did u see my post? your 91 is our 87
ergh i just saw it now, i guess i should hit the refresh button before making a post :slap:

your gas is still cheaper than ours though :)

[carotman]

^ did u see my post? your 91 is our 87
My Owner's manual even says we have to use 91 Reasearch Octane Number in the Accord :D I guess they didn't know we don't use RON numbers in Canada.

[Tomisimo]

I run98-octane. 95 is for korberetors... for EFI 98 warks fine.

[Legend_master]

I run 93 ever since the motor swap.

[Jasonf860]

Ok, here's the real deal on octane....
http://www.oregon.gov/ODA/MSD/docs/pdf/gas_octane_guide.pdf
And for reference, all grades of gasoline have the same or close to the same amount of energy per liter.(some high octane fuels have additives that increase energy/liter) Octane has nothing to do power, however it does influence how you set your timing/compression and therefore is relative to power.

[Tomisimo]

dont know man, but i feeled a BIG diference when i started to drive on 98octane insted of 95.
edit: and fuel consaption went down to. Propably coz of motor needs las RPM to klime hils aroud here.

[speedpenguin]

I ran 87. You don't need anything else unless you have a cam, or you bumped the timing.

[88LXi68]

Depending on where I am 93-110

[blaze one]

I run Chevron 87 , and have not noticed any pinging .

But... My original owners manual states that I should run 91 . I will have to give it a try once I have some extra $$ . and see if I get better MPG with the 91 .
My car idle pretty well 90% of the time . Sometimes at stoplights , it gets a little rough .

[etvergara23]

i run 87 oct as well.

[carotman]

I run Chevron 87 , and have not noticed any pinging .
But... My original owners manual states that I should run 91 . I will have to give it a try once I have some extra $$ . and see if I get better MPG with the 91 .
My car idle pretty well 90% of the time . Sometimes at stoplights , it gets a little rough .

My Owner's manual even says we have to use 91 Reasearch Octane Number in the Accord :D I guess they didn't know we don't use RON numbers in Canada.

go read Frantik'S post, our 87 is equivalent to 91 RON. There is no benefit in using 91 octane in those engines in stock from.

[AccordB20A]

91 octane with some shel fuel economy formula. makes each take go a bit further.. and i swerar by it.. IT WORKS!!!!!!!11111!!1one!!!!!!!111!!eleven

go well go shell

[buttaz1]

i run 89 cuz i never have enough for 91 or what ever and 87 aka the chepo gas sucks it waste too fast like if i put the medium gas i can drift about 15 miles before the needle moves. noticably. and with the cheepo kind i cant get in my car befor the neeble goes to empty?


also what chhick broth is that like chiken juice purred down the carb

[HondaBoy]

i'm using 93 octane now. after taking all the vacuum crap off it would ping in our hot weather. gets between 20-35 miles more a tank since i consistantly started using it, of course depending on how i drive it. idles smoother, exhaust note is a little different too, but in a good healthy sounding way. dont know why that changes when i go from 87 to 93 octane? anyway, high humidity and hot air dont help with the pinging it was getting. i'll probably use 87 octane after i do some more tweeking if i can get it right. oh, and the engine runs cooler with the use of 93 octane, but its always hot here so any bit helps. just what i've observed over the 3 or 4 months of using the 93. but yeah, not everyone needs to use it.

[mkymonkey]

we even run 87 on our tow trucks....the cheaper the better :D

[buttaz1]

does that octane booster stuff really work?

[Legend_master]

does that octane booster stuff really work?


it really boost octane :dunno: , if thats what you mean.

[Cheeseburger]

ya do they work????

[mkymonkey]

not really, at least not according to the news, magazines, and some speed shows :D

[MessyHonda]

not really, at least not according to the news, magazines, and some speed shows :D

i guess thats how they rip you off...

[mkymonkey]

yeah just a waste of money....they dont even supply better mpg like they say they do

[MessyHonda]

yeah just a waste of money....they dont even supply better mpg like they say they do

leave it to the myth busters....i bet they have done something about MPG but that was on like A/C with the windows down...or the tail gate up or something like that.

[mjv13]

87. Cant find anything any lower or cheaper! :)

[snoopyloopy]

does that octane booster stuff really work?
yes, but by time you buy enough to actually say boost your octane from 87 to 89, you could've just filled up with 91 insted.

[Toneloc5145]

I use 87 octane, and I try to buy shell gas if possible. I tried 89 once, it didnt make a difference at all in power or economy, but the engine sounded a little different.

[Steve_Si]

My stupid F20B DOHC has a stock compression ratio of 11:1 so needs all the octane it can get :(

Having said that, it runs perfectly fine on 95 RON. Probably cause I drive like an old man and don't rev it past 3500rpm, 2000 below the vtec kick-in. The H22A wagon was on 91 RON but I found it would get 10% further on 95, which only costs 2% more. Neither car gets any further on 98 RON.

I always ran my B20A cars on 91 RON and had no problems.

[Tomisimo]

does that octane booster stuff really work?

NO... dont get a idea to spend money on that shit.

[Tomisimo]

i egree, they just found enather way to fool ppl. Anyways there is one thing you kan do. It posible to find a chemical that reduse friktion in motor and gearsbox, diferentual - if you have that. You se where im going? Las friktion, las fuel. not much realy 10% tops

[HondaBoy]

personally, i'd rate a good octane booster to the way something like 93 octane would make your engine run. i've used lots of addatives and tried out different grades of fuels so just from what i've observed on my cars. so octance booster:thumbdn: dont waste money on it

[speedpenguin]

The only reason to run octane booster is if you're tuned to need something higher than 91. We've already discussed how running a higher octane is pointless if you're not tuned for it, so of course octane booster isn't going to do anything for you.

[chickensandwich]

87. Cant find anything any lower or cheaper! :)

same here. anything more would be a waste to me.
i wouldnt think of premium fuel unless i had a souped up engine