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I just run Exxon/Mobil 93 Octane and have used Techron every 7500 miles since I bought the car. I've never had any problems or any signs of "bad gas."
 

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Never an iota of difference; the computer adjusts for "low octane" - if one drives really fast or tows 20 tons, then, I'd think only the highest possible octane would work...

Bad gas may be a thing of the past...
 

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That's Funny.
My gas Cap-door says, quite specifily: "use 92 octane or higher"

I would not put any lower than 91 in a 9:1 FI motor.
aside from lower power-outputs, you get less detergency in the fuel.

the higher the octane rating the better:
and as an aside: I've been using sunoco ultra-93 lately in stead of HESS-93, and my MPG has gone from ~26 mixed Average to ~30 mixed average.
it would all probably be higher, but I drive ~80MPH in my commute, and I'm pretty heavy-footed.
 

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What is this HESS? Is it just something you have in Mass and not in Maine? That wouldn't make sense. It must be an abreviation I'm not aware of...
 

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Well then! I guess I don't get out of Maine enough!
 

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What is this HESS? Is it just something you have in Mass and not in Maine? That wouldn't make sense. It must be an abreviation I'm not aware of...
Hess is the world's most bizzarre gas company. They've got maybe twelve stations, about 9 of them in Mass. However if you watch tv in mass they manage to advertise as much as any other oil company. They also put out commerative toy trucks every year year at Christmas time. My granmother always used to buy us one every year.

http://www.hesstoytruck.com/
 

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cheeky_boy said:
I tryed 3 of them and don't see any difrance which one is the best!
As long as you're talking about the same octane levels, gas is gas is gas. They all have basically the same additives.

If you had a turbo, I'd strongly recommend using the highest octane possible, just as Earthworm said.
 

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G96nt said:
and as an aside: I've been using sunoco ultra-93 lately in stead of HESS-93, and my MPG has gone from ~26 mixed Average to ~30 mixed average.
it would all probably be higher, but I drive ~80MPH in my commute, and I'm pretty heavy-footed.
Gawd, that stuff is great! I've been trying to find the Sunoco Ultra for a while and haven't found any in my neck of the woods. Isn't that actually 94 octane? :D
 

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How much more is the ultra93 typically a gallon g96?
 

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than what?

sunoco 93 Vs hess? about $.07-$.10 more.
sunoco 93 Vs sunoco 91? I think it's about $.05
 

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unless you've totally bypassed/linked out the the fuel burn control in the persuit of high performance you're Saab will run on almost any fuel called 'gasolene' [unless it's a DERV machine of course] dump any rubbish in the tank and it'll run OK
 

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mike saunders said:
Gawd, that stuff is great! I've been trying to find the Sunoco Ultra for a while and haven't found any in my neck of the woods. Isn't that actually 94 octane? :D
it used to be 94.. they changed it to 93....=0/

where are you?
*in* boston? or a suburb?

there's 5 sunoco's within 10 miles of me....
 

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I'm in Westford, off 495. I just searched and saw that there are a couple of Sunocos in Nashua, which is really close to me....

And two of them sell the 100 octane :cool:

http://www.racegas.com/gt100locals/default.asp

Sunoco GTTM 100, which has the highest octane rating of any street legal fuel, is now available at selected retail locations. Sunoco GT 100 is designed for high performance street cars, muscle cars, classics, street rods, motorcycles, karts and marine applications. Sunoco GT 100 contains no metallic compounds to harm catalytic converters or oxygen sensors. It contains a comprehensive additive package for greater engine protection and reduced fuel system deposits as measured by the BMW test. Sunoco GT 100 is also compatible with virtually all two-stroke synthetic and mineral based motor oils.




 

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bah! none in Maine!!!!! Somebody want to bring me up a few gallons for the dyno day? I'm looking at yoouuuuuu g96!!!!! :cheesy:
 

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If I bring anything up, it will be 110 leaded from the haffners on 125 in north andover. that stuff's $5.75/gallon.
1 gallon for every 6 of 93 = LOTS of fun.

Maybe I'll bring up a 5-gallon jug.....
anyone else want it?


I should probably ask in the dyno thread....

stromer.... ask in the dyno thread =0]
 

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So you go with the 6 gallons of 93 with the 1 of 110 and it comes out right eh? I didn't know if there is some weird formula for octane or anything. I'll post it up in the dyno thread. How much notice do you need? By the Friday before okay?
 

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Discussion Starter #19
Guys that sucks. How come in Europe they have 91 93 95 and 100 and the difrence between them is same like here but the difference between 95 and 100 is like 20 cents and here is $2 to $3 ! And even worse they have 100 on every single "shell" station but we don't !
 

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ROM octane measurement vs. R+M/2
 
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