Jaki

iTrader: (21)

Where is it located at?

LBSOHK

hehe , too much money to waste ?

03Brickyard

93 - I believe every gas station in Maryland... I always see 87,89,93..... last week I paid $2.05 for 93

cedusett

93 Here in VA. Price is about 1.90. There's a station by my old house in PA that sold 104 race fuel... never put it in the car though. Next time I trip up to PA, I might go for it.

igor@af

Higher will barely make any difference. Because of the Z's high compression (10.3:1), there is slight knock when running 91 octane. With higher octane gas, you will be sure to eliminate that little amount of knock, but it definately won't make the car noticably more powerful or faster.

PoWeRtRiP

on university by the arlington expressway. its a few blocks from the intersection of univ/arlington rd

pj550v12

116 also at an airport 1/2 from my house, any car can drive up and buy gas though, its not restricted to just planes

4myZ350

iTrader: (-1)

[
Higher will barely make any difference. Because of the Z's high compression (10.3:1), there is slight knock when running 91 octane. With higher octane gas, you will be sure to eliminate that little amount of knock, but it definately won't make the car noticably more powerful or faster. [/QUOTE]

you are right about not having a lot MORE power, but the smoothness in ALL areas of driving the "Z" are VARY notice-able

4myZ350

iTrader: (-1)

[
Higher will barely make any difference. Because of the Z's high compression (10.3:1), there is slight knock when running 91 octane. With higher octane gas, you will be sure to eliminate that little amount of knock, but it definately won't make the car noticably more powerful or faster. [/QUOTE]

you are right about not having a lot MORE power, but the smoothness in ALL areas of driving the "Z" are VARY notice-able.
that is with just 92.5 octain. I'v seen some negative info on 94 & above. ??

Bahraini350Z

A crappy 89

samw1978

94 chev. in van

Landbarger

iTrader: (2)

89, 91, and 93 are the standard octanes throughout the MD, VA, NC, and SC regions so far as I have seen.

Durrr

116 at the airport about 20 minutes from my house, and 100 at the station about 3 minutes from me on a feeder road to US-59

jreiter

iTrader: (6)

Exactly. In the Z, running more than maybe 93 is a waste of money. The goal is to get rid of all knock and get the timing advanced as much as the computer will allow. Once you've reached that point, higher octane will not gain you anything. I'm sure 93 octane would achieve that max point in the Z.

However, if you add boost or significantly raise the compression then you might benefit from higher octane.

2004LeMansZ

Oregon sells 91 just like California. So does the state of Washington. I know because I went on a trip to Canada last summer. Canada has 100 octane gas at the pump. In fact when I was up there they had four ratings 87, 89, 91, and 100! If you dont believe me ask any Z member from British Columbia

2004LeMansZ

Damn in California we pay ~$2.45/gallon for 91

jreiter

iTrader: (6)

For what it's worth, I was in Oregon over my 4th of July vacation (all last week), and every single town I visited had 92 octane. I never saw any 91. Perhaps other parts of the state have 91, but all of the southern parts I was in had 92.

4myZ350

iTrader: (-1)

did every one see post # 9 -1st page .if you mix 100octain to 91 octain well it go to 93octain.------ toluene is mixed 1gal. toluene to 14gal. 91octain to get around 92.5ish.

jreiter

iTrader: (6)

Not sure if you're asking a question of making a statement, so I'll comment. Yes, you can mix octane gasolines to achieve a specific octane as needed.

As for toluene, I used to add this to my Audi on occasion back when I was running big boost. I believe toluene is equivalent to about 110 octane, so you need to do your mix ratios based on that. I would often add a gallon or two of toluene along with 91 octane pump gas to achieve higher octanes.

One thing to be careful of with toluene, though. Most people buy their toluene from places like paint stores, where it's primarily used as paint thinner. The toluene you buy there is not guaranteed to be perfectly clean and pure. I mean, heck, it's only being used to thin paint. Why would you care about making it perfectly pure? That being the case, you have to be careful about what you dump into your engine.

You'll always find people saying they've been using it for a long time with no problems. Heck, I used it in my Audi for many months. Eventually, though, my common sense kicked in and I just quit using it all together and just re-tuned the car to run fine on 91 octane.

I have no idea how to tell if toluene is pure or not, or where to buy stuff that is guaranteed safe for an engine.