Octane Question
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Joined: Feb 2005
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From: China, ME, United States
Octane Question
Now that gas is becoming really expensive, I wanted to ask all of you luders out there what type of gas I shoul be pumping into my car. In the owner's manual it suggests I should use 91 octane or higher. Well, there's 87 octane, 89 octane, and 93 octane. So since i've bought the lude i've been pumping premium gas into it. Is this right, or could I be using lower grade fuel with no adverse side affects? Any help is definitely appreciated. Thanks! 
Joined: May 2004
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From: Atlanta, GA, USA
Re: Octane Question (hotstuffjsn)
Fill your tank halfway with 93 and halfway with 89. Using only 93 will cause you to waste gas, and using 89 or lower will have adverse effects with regards to performance.
look at satan_srv's explanation in this thread:
https://honda-tech.com/zerothread?id=1110784
or this recent thread from me asking a similar question:
https://honda-tech.com/zerothread?id=1203482
look at satan_srv's explanation in this thread:
https://honda-tech.com/zerothread?id=1110784
or this recent thread from me asking a similar question:
https://honda-tech.com/zerothread?id=1203482
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From: Yes Im sure, and dont call me Surly
Re: Octane Question (xthephilx)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xthephilx »</TD></TR><TR><TD CLASS="quote">Get it tuned for 93 octane and run 93.</TD></TR></TABLE>
, but who cares? 
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From: Tallahassee, FL, US
Re: Octane Question (93vtec ATL)
I just mixed some 93 and 89 to test it out. 76, The official brand of NASCAR!
Didn't know companies had their own special 'mix', good post by Satan_Srv.
Didn't know companies had their own special 'mix', good post by Satan_Srv.
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Re: Octane Question (MeUglyDuckie)
holy **** 2.65 for premium?!?!?!?!?!?1 Here in CA the CHEAPEST is 2.77 for 87. Godamn red states........
As far as damaging your car, Ive known a buncha h22 guys who ran on 87 for years, no problems w their motors as far as compression, leakdown and all that goodness, they just make **** for power w the 87 in.
As far as damaging your car, Ive known a buncha h22 guys who ran on 87 for years, no problems w their motors as far as compression, leakdown and all that goodness, they just make **** for power w the 87 in.
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From: Respek my Fresh
Re: Octane Question (chihuahuamanx)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chihuahuamanx »</TD></TR><TR><TD CLASS="quote">holy **** 2.65 for premium?!?!?!?!?!?1 Here in CA the CHEAPEST is 2.77 for 87. Godamn red states........
</TD></TR></TABLE>
That's what you get for living in a cool state. Move to a ******* city (like memphis, tn for example) and you can buy 93 octane for $2.35 (just filled up).
</TD></TR></TABLE>
That's what you get for living in a cool state. Move to a ******* city (like memphis, tn for example) and you can buy 93 octane for $2.35 (just filled up).
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From: MUFF, PA, US
You guys really think that you are getting the gas that you are paying for? I used to run 93 but then was shown that all the years of paying for higher octane most the time you are not getting that octane. I run 89 now and have been for a while and can not tell the difference between 89 and running 93 in my car.
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Re: (lude975)
http://dynospotracing.com/tech.htm
theres a damn good article. There IS a difference, it might not register a ton on the butt dyno, but it really does make a difference.
theres a damn good article. There IS a difference, it might not register a ton on the butt dyno, but it really does make a difference.
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From: Respek my Fresh
Re: (chihuahuamanx)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chihuahuamanx »</TD></TR><TR><TD CLASS="quote">
theres a damn good article. There IS a difference, it might not register a ton on the butt dyno, but it really does make a difference.</TD></TR></TABLE>
if the guy in the link running 89 had backed off his timing a little, the curve wouldn't be so erratic. I paid way too much for my dohc to bitch about an extra $0.10 a gallon difference between 89 and 93. Easily worth the extra dime to me, but I guess, according to the article, if you don't have a knock sensor, it doesn't matter.
theres a damn good article. There IS a difference, it might not register a ton on the butt dyno, but it really does make a difference.</TD></TR></TABLE>
if the guy in the link running 89 had backed off his timing a little, the curve wouldn't be so erratic. I paid way too much for my dohc to bitch about an extra $0.10 a gallon difference between 89 and 93. Easily worth the extra dime to me, but I guess, according to the article, if you don't have a knock sensor, it doesn't matter.
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From: Respek my Fresh
Re: (chihuahuamanx)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chihuahuamanx »</TD></TR><TR><TD CLASS="quote">BTW "ihateJDM" thats a freaking h elarious name i love you..... in a brotherly way.</TD></TR></TABLE>
Appreciate it man. Check this out. It's from last month, but that's a problem I wouldn't have thought of with rising gas prices.
http://www.usatoday.com/news/n...x.htm
Appreciate it man. Check this out. It's from last month, but that's a problem I wouldn't have thought of with rising gas prices.
http://www.usatoday.com/news/n...x.htm
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Joined: Nov 2004
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From: Lafayette, LA, USA
Re: (92h22alude)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92h22alude »</TD></TR><TR><TD CLASS="quote">Gas down here in miami is $2.49 for 93 average. I spray so nothing lower than that for me! We got 100 oct too but its like $3.96 a gallon 
</TD></TR></TABLE>
100 octane, not fair, id buy it. The I run 93 over hear in Louisiana and its like $2.35-$2.45 a gallon
</TD></TR></TABLE>100 octane, not fair, id buy it. The I run 93 over hear in Louisiana and its like $2.35-$2.45 a gallon
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From: northern DRUNKit, ma
Re: Octane Question (khalal538)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by khalal538 »</TD></TR><TR><TD CLASS="quote">DO NOT PUT ANYTHING UNDER 91!
The h22a is made to use higher octance because of it's high compression</TD></TR></TABLE>
10:1 isn't that high. i wouldn't go any lower than 89. the car has a knock sensor for a reason, if the gas causes excessive knocking you will hear it and notice the difference, i have personaly run 89 with no problem
if you had 11:1 + then i might say run only premium
The h22a is made to use higher octance because of it's high compression</TD></TR></TABLE>
10:1 isn't that high. i wouldn't go any lower than 89. the car has a knock sensor for a reason, if the gas causes excessive knocking you will hear it and notice the difference, i have personaly run 89 with no problem
if you had 11:1 + then i might say run only premium
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From: Yes Im sure, and dont call me Surly
Re: Octane Question (prelittlelude)
Hey I always wanted to know by how many point's in octane does it go up when you use those octane boosters? and which one is the best.
B*a*n*n*e*d
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From: Nowhere and Everywhere
Re: Octane Question (92h22alude)
Read the back of the bottle. But when it says it brings octane up 3 points, 91 octane doesn't become 94, it becomes 91.3. Besides, this is OT. Make another thread for this or, even better, search.
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From: Yes Im sure, and dont call me Surly
Re: Octane Question (xthephilx)
How is something that is related to octane off topic? I could be and alternative to mixing gas. But thanks to you we now know that its not adequate enough for what hes trying to do. THANK YOU xthephilx.
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From: Portsmouth UK, England
Re: Octane Question (92h22alude)
You guys in the US make me laugh !! if any of you ever came over to our little island then you would fall over laughing at the price of our 'gas' Currently i pay $6 for a gallon off Shell Optimax in the UK which is 97 octane. But in my H22a you cant really tell the difference but a leading magazine tested Optimax against regular unleaded and found that although the performance was slightly greater they said that it kept the internals a lot cleaner which makes it worth it in my book!
