man it sucks...i know everyone says theres no difference other than detergents and this and that,but since i had my car i ran 89,recently i started running 93 (theres no 91 around here) and its a difference...pulls smoother up top,feels a bit stronger,i feel like something was holding me bak when i ran 89...only issue ive found with the 93 is when i start the car it may crank a lil bit more sometimes as to when i ran 89 it will fire up soon as the key is turned...any one wanna comment..please do...thanks...by the way the car is stock engine wise,just a k&n drop in filter,with the resonator removed..

 

Your car is not gaining anything from 93 octane at all, unless the lower octane gas in your area has less additives. Wtih 93 octane, you might actually get lower gas mileage, as the 93 octane resists combustion so much that you are not getting an optimal burn in the combustion stroke.

There is absolutley no reason to run that kind of fuel in a stock B18A/B. Use what Honda reccomends, 87 octane. They designed the engine to run on that fuel. Save yourself the cash...

 

Yeah, quit wasting your money on 93 octane and get what Honda recommends.

 

i"ll never go back to 89 or even 87 for that matter...it just makes the car feel sluggish... one other thing though is either i have a freak ls or the previous owner did internal work i wouldnt know about...its a quick lil ls....and in actuality i burned more gas running 89...i get better milaege with the 93...

 

Octane has nothing to do with power or performance. With higher octane, the only advantage is prevention of detonation. Unless you're knocking there is no need at all for anything else than 87. Rather than blaming the octane, have you considered the quality of the gas. Maybe, you got a bad batch of gas.

 

i must have always got bad batches of the 89 then and i only use mobil or exxon...and like i said i knew this was gonna start a octane war..but i know what i feel using the two different octanes...

 

ahh...the good ole butt dyno.

a higher octane will give a better more complete burn and will let the engine run cooler or not ping. but, this only works for a car that is meant to run on a high-octane such as 91 or 93. if you run a lower octane than recommended than the motor will run less efficiently.

by the way, mobil and exxon are not high-quality gasolines. i read the lab results. chevron is number 1, with shell right behind. philips/conoco/bp are better than exxonmobil and even unical76.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMDA9 &raquo;</TD></TR><TR><TD CLASS="quote">Your car is not gaining anything from 93 octane at all, unless the lower octane gas in your area has less additives. Wtih 93 octane, you might actually get lower gas mileage, as the 93 octane resists combustion so much that you are not getting an optimal burn in the combustion stroke.

.</TD></TR></TABLE>and how exactly would he be getting worse gas mileage when the higher the octane you use, the slower the fuel burns? that's not an acurate statement at all.
People primarily use higher octane to prevent knocking and pinging. I absolutely hate using anything lower than 93 because it makes my B16 knock and ping slightly on 89...never went back to anything lower than 93 since. more expensive, but for my particular motor, it's needed. Usually the consensus seems to be this: use the lowest octane gas you can get away with. For me, that's 93. I don't know who is saying that you're not losing performance of your engine if your motor is spending time hesitating, knocking and pinging from not having the proper octane going through it, but that theory doesn't seem to make sense to me either, since if your car is hesitating when you press the pedal down, you're losing time that you could be accelerating.

 

thats because your motor is meant and tuned for 93 octane. an ls motor is not. its c/r is not high enough to need it.

 

i hear your point,cause when it was hot (90 degrees out and better) my car ping but only when i got on the gas hard and at about 4500 rpm..which is why i opted to try 93 octane and never went back...no pinging,pulls smoother in the higher rpm,and better gas milaege...so mobil and exxon gas is crap...?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teg-your-it &raquo;</TD></TR><TR><TD CLASS="quote">i hear your point,cause when it was hot (90 degrees out and better) my car ping but only when i got on the gas hard and at about 4500 rpm..which is why i opted to try 93 octane and never went back...no pinging,pulls smoother in the higher rpm,and better gas milaege...so mobil and exxon gas is crap...?</TD></TR></TABLE>

How would your engine knock with 9.2:1 compression? A B16, with 10.2:1 compression, requires high octane fuel to keep from destroying itself at high RPM. I don't think ambient temperature is going to cause you engine to ping, either. I have used 87 octane from Quiktrip or BP in my LS since I bought it. No problems ever, and this summer it got upwards of 110* here in Kansas with 100000% humidity...

You should only be using Chevron gas if it's available where you live. Their Techron additive, which should be the same amount in each octane, is the best fuel additive out there. Shell, Sunoco and BP are also quality fuels. Be sure you go to a good station, too. Preferably not a franchised store, as they don't have to abide by company standards of adding the same amount of additives for each grade.

Mobil, Texaco, Exxon, Conoco

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMDA9 &raquo;</TD></TR><TR><TD CLASS="quote">

How would your engine knock with 9.2:1 compression? A B16, with 10.2:1 compression, requires high octane fuel to keep from destroying itself at high RPM. I don't think ambient temperature is going to cause you engine to ping, either. I have used 87 octane from Quiktrip or BP in my LS since I bought it. No problems ever, and this summer it got upwards of 110* here in Kansas with 100000% humidity...

You should only be using Chevron gas if it's available where you live. Their Techron additive, which should be the same amount in each octane, is the best fuel additive out there. Shell, Sunoco and BP are also quality fuels. Be sure you go to a good station, too. Preferably not a franchised store, as they don't have to abide by company standards of adding the same amount of additives for each grade.

Mobil, Texaco, Exxon, Conoco </TD></TR></TABLE>the only thing I disagree with here is the to Texaco as well. Texaco fuel has Clean System 3 in it, which is almost as good as Techron....my first choice will ALWAYS be Chevron though; Techron has the highest concentration of Polymethanine(unsure of spelling on that word), which is the only additive that is legally proven to clean fuel injectors, and if fuel injection cleaners do not contain that additive, they cannot legally be considered a fuel injection cleaner. to Chevron.

 

well i dont know why it was pinging but is was and it doesnt since i use 93 octane...as fas as chevron...there are none by me...but plenty of bp,shell,and sunoco...i"ll try 89 of one of those three and see what it feels like...but i know that the 93 makes my car feel happier...its like tap water and spring water..lol..

 

What did this ping sound like? Just curious. Just use 87, too. No need for even 89 octane.

And for Texaco, something happened with them here in KC and all the stations were bought out by Shell. I've heard bad things about them here, but I would imagine they are better elsewhere. I retract Texaco as being a bad gasser.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMDA9 &raquo;</TD></TR><TR><TD CLASS="quote">What did this ping sound like? Just curious. Just use 87, too. No need for even 89 octane.

And for Texaco, something happened with them here in KC and all the stations were bought out by Shell. I've heard bad things about them here, but I would imagine they are better elsewhere. I retract Texaco as being a bad gasser.</TD></TR></TABLE>

i dont how i could describe the sound other than ping,ping,ping...it sounded nothing like the valve tap noise when u need a valve adjustment...i guess take glas and tap it with a spoon or something is how i can compare the sound..

 

i put in 93 once and got 75 less miles for that tank of gas than anyother tank i have ever put in. i will never buy above 89 again until i get a turbo.

 

Pinging from low octane gas usually can be described as sounding like a diesel motor...you can always hear it the best when hard on the accelerator.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid Invasion &raquo;</TD></TR><TR><TD CLASS="quote">Pinging from low octane gas usually can be described as sounding like a diesel motor...you can always hear it the best when hard on the accelerator. </TD></TR></TABLE>

ok ..thats only when i use to hear it is when hard on the gas ...and i guess your description of it sounding like a deisel motor is correct..

 

since my dad worked for texaco...i can now let you in on what has happened.
texaco had a joint venture with shell from 1998. that venture didn't work out to well and shell was going to buy out texaco.
but, chevron got to it first and wanted to buy texaco. so, an agreement was arranged. shell had access to the texaco name until 2004 and chevron has access to texaco products, r&d and havoline oil.
so, shell is converting all the texacos it wants to the shell brand before the end of this year. after that, the rest will go to what is now chevrontexaco.

texaco's system3 additive, which my dad helped with in the mid 80's, was patented but chevron bought some of the formula rights to make techron. since shell took over texaco, texaco has been using shell's additive. but are still marketing it as system3. shell's additive is made by a company that specializes in additives and also supplies many other companies. but they have various types. shell and texaco, along with bp-amaco and conoco-phillips are using it too. its still a step under chevrons. so, that is that.
oh, and if you live in the midwest or rocky mountain region...buy sinclair oil...hehehe. it also uses the same additive shell and texaco have. and its the company my dad is vp of and i am also working for(when not at school).

 

so exxon/mobil is at the bottom of the list as far as quality gas goes...and in my area i can only get...sunoco,shell,bp, other than exxon mobil...and based on the previous post my alternatives are all the same basicly with chevron on top of them...

 

go with shell then.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by texnteg &raquo;</TD></TR><TR><TD CLASS="quote">oh, and if you live in the midwest or rocky mountain region...buy sinclair oil...hehehe.</TD></TR></TABLE>

Dinosaur gas! Hell yeah.

I always wondered why Texaco dissappeared around here...

Anyway, if your engine is making diesel engine noise on a regular basis at high rpm, expect to have some severe engine damage. Gasoline engines can't handle extended detonation like diesels are designed to. One to many pings and you will have cracked pistons. If the detonation you were experiencing was as consistent as you are implying, then the engine would have been damaged long ago.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by texnteg &raquo;</TD></TR><TR><TD CLASS="quote">ahh...the good ole butt dyno.

a higher octane will give a better more complete burn and will let the engine run cooler or not ping. but, this only works for a car that is meant to run on a high-octane such as 91 or 93. if you run a lower octane than recommended than the motor will run less efficiently.

by the way, mobil and exxon are not high-quality gasolines. i read the lab results. chevron is number 1, with shell right behind. philips/conoco/bp are better than exxonmobil and even unical76.</TD></TR></TABLE>

How will higher octane give you a more complete burn? Actually, the higher the octane the more carbon is left behind.

Lower octane burns hotter which, is why it runs cleaner.

 

i was talking about a car that is supposed to run on a higher octane. guess i should have clearified that from the beginning.

 

ive been running 93 octane ever since i started spraying..and yes i can say gas milage seems to have taken a ****.