anyone actually use 93 octane gas?

I can't find it anywhere. Best I can do is 92. Does this really matter that much? Grant

I can only find 91 so if I could locate 92 I would go with it and definitely go with 93 it is was around also. Now I would want to stick to a reputable brand also, I like Union 76, then Chevron.

Great thing about Florida is that we have 93 everywhere.

boooo You would think we would here in California too with all of the refineries around, especially where I live, but we don't. But if anyone in the S.F. bay area knows of a station with 93 let me know

In California, the best way to get 93 is to mix 3:1 of 91 and 100 gas. This is what I do. There is a Union 76 on Almaden Expressway in San Jose that sells 100 gas.

Hamilton, Your first name isn't Lewis, is it??? Where do you live??

I only use 93. I never have any trouble finding it in the midwest.

I use Chevron 93 octane in all of my cars and bikes (down here in Texas).

California prohibits the sale of higher than 91 octane for large production. You can purchase 100 in very rare locations. In the San Jose, CA area it's the 76 at Almaden Expressway and Foxworthy.

I live in Iowa.

.....Or....go buy five gallons of Toluene at Sherwin Williams and add a gallon to a tank...there's a forumula for adding X amount to bump up the octane. I run a bit Toluene in every tank of gas in my 930 to keep it from detonating when it gets hot around here. Remember though...it's highly volatile so watch how and where you store it. I think straight toluene is 114 octane. Here's an interesting article on the subject that I found very informative and useful: http://www.elektro.com/~audi/audi/toluene.html . My apologies in advance if it's a reprint from a previous post somewhere. Chuck

Check out Street Blaze, street legal fuel from *VP Racing Fuels in San Antonio, official fuel supplier of the ALMS, btw: "Oxygenated with ethanol, this CARB-legal fuel is specifically engineered for high-performance street cars including sport compacts, muscle cars, street rods and more. It's environmentally friendly and street legal throughout the U.S. In applications with anything from 4- to 12-cyclinders or engines equipped with a turbocharger, supercharger or nitrous oxide system (NOS), StreetBlaze 100 will generate optimum power and performance. In turbocharged or supercharged applications, it allows an increase in boost without fear of detonation. NOS users can also leverage their higher octane ratings to step up to a more powerful nitrous oxide system. Dyno tests with a turbocharged application proved StreetBlaze100 generates up to 14% more horsepower compared to premium grade 91 octane unleaded gasoline. Designed for use in cast-iron head engines with CRs up to 13:1 and aluminum head engines up to 14:1. Works well on the latest generation of electronically-controlled turbo engines. Contains no metal compounds and won't harm catalytic converters or oxygen sensors." � Color: Orange � Oxygenated: Yes � Motor Octane: 96 � R+M/2: 100 � Specific Gravity: .746 at 60� F VP RACING FUELS LINK They even ship it to you... Oh, yes, I use 93 Octane... so as not to hijack the thread! Kim *no affiliation... fuel info provided as a renne bene - fee free!

You can run 91 and the car will adjust accordingly. You will lose some power but nothing you will feel significantly.

Every tank.

Is pigs *** pork? Does a bear **** in the woods?

I have never heard of the stuff and I live in San Antonio. Family uses VP for the drag cars. We used to have a Shell station that sold 110 octane (well, there is no such thing as octane over 100, it is called heptane) striaght out of the pump. Interesting, I will have to investigate.

A bear and a rabbit are ****ting in the woods. The bear looks over to the rabbit and says "does **** stick to your fur?" The rabbit says smuggly "nope, not my fur." So the bear wiped his *** with the rabbit.

I only use 93. Does this mean I could get huge HP gains by chipping my car?

Im in San Jose.. so to fight the 91 Octane deal, I tried using an Octane Booster once.. huge difference at the low end. Usually my car is really weak around 14 mph or less in second gear, with the boost I had much more power around there. Also, at high RPMs the engine sounded much much nicer, like it was happy to be there.. where as with 91 it sounds freaking pissed off. I have also heard about Foxworthy and Almaden.. I have to make a trip there. I've heard of racing gas at a Unocal 76 around Redwood City as well.

Anyone know where you can buy 100 octane in SoCal (other than the race tracks??)

All I put in is 93. It's all around here in Dallas. -td

Tippy, Their tech director is a good resource for any questions, as well: VP TECHNICAL DIRECTOR "If you have a technical question regarding VP's fuels, traction adhesives or other products, you may click on the link above to send an email with your question directly to VP's Technical Director. Please give a brief description of your application along with your question(s). You may also call VP's Technical Department at [phone removed], between 8 a.m. - 10 p.m EST, seven days a week. Note that nontechnical questions related to pricing, dealer locations, etc. should be directed to the appropriate VP Regional Office." Click on the 'contact us' on their home page: VP RACING FUELS HOME PAGE LINK Let me know the results of your investigative work! Kim

Unocal 76 station at the end of the Pasadena Freeway (110) in Pasadena. I used to go to Whiteman Airport near Pacoima to get 100LL for my turbo bike.

For automobiles maybe. For aircraft no. There is 130 Octane fuel available in aviation. It is dyed green in color where the 100LL is blue. It is measured in a slightly different matter however. It is an index which assumes a supercharged or rich mix condition. 130 is hard to obtain however, often aquired for occasions such as sanctioned air races like Reno. Majority of these WWII era aircraft are supercharged.

Important caution regarding 100LL. The "LL" stands for low lead. This means it has a low lead content in relation to other aviation fuels . However in comparison to automotive unleaded it has a fair amount of lead and probably not a good idea in a car requiring unleaded.

Thanks.

Not to change the direction of the thread, but since we are on the topic of fuels (and aviation fuels), if any of you use a kerosene heater in the winter there is a better alternative. If your local airport can accommodate jet aircraft then you can obtain Jet-A fuel. Much cleaner than kerosene and burns cleaner too. It is a derivative of kerosene and close to diesel#1 so it works great in diesel cars as well. It also will not gel until at least -40 or -56 depending on brand. (I burn a few hundred thousand gallons of Jet-A per year...the way it was intended to be ) You may even get a hell of a deal. Fixed Base Operators (they pump the fuel at the airport) drain off a considerable amount of fuel every day from the trucks to check for water. This fuel is considered contaminated even though there will likely be no water present. You may be able to take this off their hands for little or nothing. This is also the case with 100LL aviation fuel but it usually ends up in the fuel tanks of the airport equipment. Sorry, back to the regularly scheduled program!

I remember that fact from my aviation books (I am a part-time jet mech with an A&P). Octane stops at 100, heptane goes over 100.

aviatorX- About how much per gallon, assuming no 'heck of a deal' from the FBO's? Thanks! ~Curious in Tex-A$$, Kim

I certainly do not doubt your experience, however it does clearly say "130 Octane " on this fuel when it is delivered. Never a reference to anything resembling "heptane". But then I just fly 'em. Here is what my search of Heptane turned up: "The straight-chain isomer n-heptane is the zero point of the octane rating scale. It is undesirable in petrol, as it burns explosively, causing engine knocking, as opposed to branched-chain octane isomers, which burn more slowly and give better performance".

Varies widely. There are numerous aviation search engines where you can see Jet-A being sold today for as little as $2.70/gal up to $6/gal. Average seems to be around $4.25-$4.75 at midsize to large airports. Then there are discounts of up to 50-75 cents/gal if you buy large quantities (maybe 500-1000gals+). Price is comparable for 100LL as well. They are usually within 20 cents of each other.

[Image-only post; no author-written text. Original image references:] https://rennlist.com/forums/graemlins/bowdown.gif

I know, I know. For those not in aviation; it happens between the pilots and the doctors (mechanics). Sometimes chests get pounded and heads swell a bit (we are born with oversize egos). I am guilty of it. But rest assured that I have the highest respect for those that work on the piece of aluminum that holds my butt in the air. Many of them are my dear friends and I know they want to see me come home safely as much as I do!

Last time I got some was years ago @ HPN, IIRC... Uh, unless I have a 'winged receptacle', I will have to pass on the 'high volume discount!' It was 'concerning enough' surrounded by barrels of VP racing fuel in the hot pit @ Road America's ALMS race... during the lightening storm! Thanks! Kim

No chest pounding. Just saying we are in the same business, but on different ends. I am only half right on this topic, it is true that octane stops on a 100 point scale. it is not HEPTANE that goes over 100. I dont know what it is now as I did a quick search to confirm my statement and realized that heptane is on the low end of octane. Sorry for the mis info.

Woodside Road in between 101 and 280.

........That's why I said I put in in my TURBO bike.

So I guess I'm lucky that the closest gas station to me is a Sunoco which carries 94 here in the midwest.

Understood that fully. It was a caution for anyone who might be thinking it was a source of 100 octane fuel for those Porsche thingys since that was the focal point of this thread. Thats why I said "probably not a good idea in a car requiring unleaded".

Guess we are lucky here in Canada!!!!!! Both PetroCanada and Sunoco actually have 94 octane!! In my case when I bought my baby about 2 months ago, my first post I mentioned that it had a "bogging down" sensation between 4-5000rpm when accelerating "briskly", that was on the 91 octane premium that I thought was the best I could get....when I discovered the 94 octane, after a few tankfuls the bogging down is completely gone. ( I also wonder whether the computer adapted to the way I drive compared to previous owner that may not have revved it much?? )

Very good caution indeed. 100LL smells goods while running but once your injectors are clogged and the cats are toast, it doesnt smell so good anymore. You can run it in any carbureted car or bike though.

Well, I never suggested running it in a Porsche. My turbo bike is fuel injected and I have had no problems running the 100LL. Use to run it in the flat bottom, but it got to be too expensive. When I lived in New York, I used to get 95 octane at the Sunoco stations.

mejier around my house sells 100 octane unleaded at the pump.. i always wanted to try it but was scared what you guys think? will if feel a boost in power? will the car run better? will it blow up????

Be sure to get back to us on that! Standing by for follow-up report... and remember my guess is. . . . Happy driving! Kim

What would be the ratio of 100 octane to 91 octane to arrive @ ~93? Is it a direct correlation, ie. 50/50 = 95.5? TIA.

nothing but 93 for me

Sunoco 94 here in Canada baby! I use that as much as I can, but if I'm in a pinch and can't find a Sunoco, I just go to Shell, etc as long as its above 90.

Sunoco 93 exclusively - they used to have 94 here in NY but that went away. I do have access to 100 and 105 that I did see a bump from in my chipped TT but I haven't tried it on the 996.

1 gallon of 100 to every 3 of 91. Been running it in my 996 since it was new, and it really does make a difference.

We have 93 here in Idaho at Sinclair Stations, but it is 15% ethanol... I think I get better MPG with 91 from Chevron. Cheers, Bill

OK, went to my local paint store and not only did they not have anything labeled "Toluene" in the solvent section, the young guy behind the counter didn't know WTF I was talking about. (Big surprise these days). Does it come labeled any other way? They had Naptha, acetone, ketone(?), and about 5 other solvents, just no toluene. Help?

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I won't use it. They achieve their octane rating with methanol. The resulting 94 is a true reflection of its knock resistance, but the engine management system doesn't see it that way. With a lot of cars, my previous Bimmers included, the car ran rich on Ultra 94. You could tell by the soot in the tailpipe. I'm currently using Shell's premium fuel. Lower octane rating, but no methanol. All my cars run better on it than on Ultra 94, and the mileage is marginally better, too.

Sunoco Ultra 93 in the 996, but will run 92 premium in the S4.

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Have you had to refill the 996 tank since you bought it? For instant help dial [phone removed] (1-800-therapy)

If I could buy it in California I would. I have run a 100/91 mix, but it's costly and I have to burn almost 2 gallons just to get to the gas station that has 100 and back. Welcome to the Socialists Republic of California...