87 or 89 octane?

MyNeonSaysHi · Post by **MyNeonSaysHi** » Wed Jun 29, 2005 4:05 pm

I have a 01 sohc Neon and I was browsing over the manual and noticed on page 113 that if you have a 2.0 standard engine that they recommend 87 octane. "The use of premium gasolines will provide no benefit over high quality regular gasolines, and in some circumstances may result in poorer performance." I personally have been using 89, should I just be putting 87 in my neon?

Thanks

dblsg · Post by **dblsg** » Wed Jun 29, 2005 4:06 pm

i don't know about neons, but i did use 110 octane on my bike.......and boy does it make a difference.....zzzzzzzzzzooooooooooommmmmmmm

DjTransifi · Post by **DjTransifi** » Wed Jun 29, 2005 4:20 pm

You can if you want.. I too have tried both grades and there really isn't a difference.. My MPG went up with the 89. With the current gas prices as they are use 87. The book recomends it.. Just don't go to a cheap ass gas station you have never herd of..

05srt4clone · Post by **05srt4clone** » Wed Jun 29, 2005 4:36 pm

I use 89 with 10% ethanol same price as 87.

BlackRoseRacing · Post by **BlackRoseRacing** » Wed Jun 29, 2005 4:40 pm

87 is recomended because thats what the car was designed to run, anything higher than that really wont benifit you on a STOCK motor. Believe it or not, once you start adding a CAI, catback system etc..you will need to start running a little better gas since the computer is starting to see more airflow and fuel it will actually start to advance the timing at a different point.
Our 2GN's computer has a quick learn feature that recalibrates things based on our driving habits...oh crap im starting to ramble now and im getting off toping....anyways....
87 octane(non-reservation) gas is good for a stock motor
89 octane is good for a mildly modded motor
91-93 is good for a motor with more than 10:1 or forced induction

Post by **Diablo0** » Wed Jun 29, 2005 6:30 pm

Yeah, if the car isn't tuned for, by that I mean the PCM doesn't have the fuel maps for the higher octane you aren't going to see any difference other than a lighter wallet.

91+ is recommened for the Magnum motors since they are tuned for that octane while the non-Mag engines are tuned for 87.

BlackRoseRacing · Post by **BlackRoseRacing** » Wed Jun 29, 2005 7:57 pm

as diablo stated.....

WiTeOuT · Post by **WiTeOuT** » Thu Jun 30, 2005 2:32 am

I had run 89 for awhile, and did see a slight, slight difference in milage as well. BUT not even close to worth it! Go with 87 and same some dough.

weber · Post by **weber** » Thu Jun 30, 2005 8:21 am

I just recently switched from running 89 to 92 and I see my car getting better mileage. Its weird, runs smoother and seems to be a little more peppy. Nothing spectacular...but notice it taking off from lights. I would take mine as a mildly modded engine...but it does seem to run much smoother the higher i go.

BlackRoseRacing · Post by **BlackRoseRacing** » Sat Jul 02, 2005 11:28 am

do you have a magnum or just a plane sohc 2.0?
remember the magnum's run almost 9.8:1 comp. with other factory performance parts and requires 91 or higher octane.....
My old SXT sohc plane jane had basic mods done to it and I got the best performance running 93 Kwick Fill gas(FYI that all I use)...
post your mild mod motor and I will tell you what gas octane will be the best based on my personal experience and the help with a local dyno shop....

MyNeonSaysHi · Post by **MyNeonSaysHi** » Sat Jul 02, 2005 12:20 pm

AEM cai. Vibrant muffler. SOHC. slush box.

mospaxreton · Post by **mospaxreton** » Sun Jul 03, 2005 1:08 am

brr wrote:do you have a magnum or just a plane sohc 2.0?
remember the magnum's run almost 9.8:1 comp. with other factory performance parts and requires 91 or higher octane.....
My old SXT sohc plane jane had basic mods done to it and I got the best performance running 93 Kwick Fill gas(FYI that all I use)...
post your mild mod motor and I will tell you what gas octane will be the best based on my personal experience and the help with a local dyno shop....

What do you think I should use? (since you're so helpful

) You can see the list of my mods on page 2 of my cardomain, I use 89 right now...

scneonchic · Post by **scneonchic** » Sun Jul 03, 2005 2:02 am

i used 93....just because my car seems to run better on 93. i know alot of people will say that its just my mind, but ive been using it for over a year and even though gas prices suck, i think it runs best on 93. just my 2cents tho

BlackRoseRacing · Post by **BlackRoseRacing** » Sun Jul 03, 2005 7:09 am

for starters you never mentioned you run N2O. Run 93 or higher in your setup....

mospaxreton · Post by **mospaxreton** » Sun Jul 03, 2005 6:05 pm

brr wrote:for starters you never mentioned you run N2O. Run 93 or higher in your setup....

Well I dont use it anymore... I broke the nozzel that goes into the intake, so as of right now I dont use it no more...

So do you think I should use 91? Thats highest octane here in California. Unless I try and find where they sell race fuel, but Im not to willing to keep driving somewhere specific for gas you know what I mean??

So yes again no more N2O for now but now I know when using it 93 or better what about without?

BlackRoseRacing · Post by **BlackRoseRacing** » Mon Jul 04, 2005 7:36 am

Because of the mods you have and California's weather(and cheap quality gas) stick with the 91 octane.
Thanks to california, they are putting ethanol in the gas over here in WNY.
With the minor mods you have, and the intake temps are probably high due to the california weather, run the 91 octane. It will help with detonation...

mospaxreton · Post by **mospaxreton** » Mon Jul 04, 2005 3:38 pm

brr wrote:Because of the mods you have and California's weather(and cheap quality gas) stick with the 91 octane.
Thanks to california, they are putting ethanol in the gas over here in WNY.
With the minor mods you have, and the intake temps are probably high due to the california weather, run the 91 octane. It will help with detonation...

Sounds good, I will try that. Thanks

BlackRoseRacing · Post by **BlackRoseRacing** » Tue Jul 05, 2005 6:58 pm

Anytime, I try to help....

Mopar00Neon · Post by **Mopar00Neon** » Tue Jul 05, 2005 7:24 pm

I use 87 with only bolt-ons. Dont notice a difference with other grades. Hell, even run 87 in a '98 R/T with bolt-ons and it doesnt get any worse mileage or perform any different on the dyno than with 91.

BlackRoseRacing · Post by **BlackRoseRacing** » Tue Jul 05, 2005 9:55 pm

well, by the looks of your sig, your in the same climate as him.......Im over here in WNY where we can have 90deg weather and still throw some hail....my results will definatley differ from yours and his....
I also think our altitude is different wich ALSO results in defferent readings. Any one in the CALI are want to give him some advice jump in, by the sounds of it im the only one in WNY so whatever I can do ill help....

lowneon · Post by **lowneon** » Tue Jul 12, 2005 8:17 pm

i run 89 in both of my cars, and i can tell a difference. 03 and 05 neon sxt.

difference, the 03 ticked alittle with 87 when i bumped it to 89 it stopped.

BlackRoseRacing · Post by **BlackRoseRacing** » Wed Jul 13, 2005 6:02 am

As I stated, altitiude difference, you in NorthCarolina, im in WesternNewYork, there in California....
I dont even know how good the gas is over there.....