I had an instructor of mine tell me once that years ago as a project he had tested different brands of gas for the calorific heating value (energy per unit volume) he did this 20 years ago but he said that the bigger gas companys had more energy in their gas than the discount stations. I know that higher octane values allows one to run higher comp ratios and more timing (increasing VE which = more power). Does someone have any articles on brand comparison?

 

I dont know about all that but i have been using nothing but CHEVRON 89 and occasionally 93 for the past 15 years and have never had a problem.

Lonnie

 

I use Stewarts gas octane 87 and it works good.

 

i haven't noticed much difference between the 'big' brands

with the exception of arco, every car i've owned, except my RX-7, always seemed to run 'odd' on their gas, but I could never pin down exactly what it was.

Flying J seems to get worse milage in my firebird, and the guy i bought it from said it seemed to like Chevron 92 the best, and i've noticed the same on a few other chevy powered cars i've owned, so that is normally what i run.

 

Exon/Mobil 93 octane. Best stuff according to my '88, it's a little picky. I could run cheap stuff in the '92 but I'm so used to paying for 93 octane I just use that.

 

Bp 93 octane on my 92 RS (t.b.i.305) if that helps.

 

I can only run Chevron or Texaco premium in the carbed 11:1 406. The EFI 9.7:1 355 Iroc (and the 4.6L T-bird) is able to run OK on Shell premium as well - the power is noticably off with any other brands.

Seems like Vizard did a bunch of dyno pulls checking gas,, but that would only be good for the time period it was done in - Exxon use to be my gas of choice from 87 - 92 (or so),, and now the lawn mower won't run on it.

 

92 or 93 (i forgot what the have) octane from Crown gas station. I like the people who work there, and also it is the closest one to me!

 

I use hess 93 It runs much nicer in my 86 camaro. I alway heard bad things about CHEVRON 93. But i still use it and no problems.
I cant use cheap gas in my car or it will start to back fire alot .:lala:

 

Mobil or Phillips 66. I always run 90+ in any of my cars. NO 76, Clark, Amoco/BP, or any discount places. I will take the chance of running out of gas before going to any place other than Mobil or 66. That is unless I am somewhere in BFE.

 

I get big company gas, except for BP. I've heard nothing but bad things about BP gas. I dunno what's bad about specifically but better safe than sorry.

 

Tite,

You realize that most of the fuel in "northern Illinois" comes from one of only a handful of storage depots, and that most of the source of that fuel is either the Amoco or Clark refineries in the souther Chicago/Gary area? That means that the "Phillips" or "Mobil" gasoline you are using is likely actually a Clark or Marathon product. Sit out at the depot entrance for about 20 minutes and see how many "name brand" tankers load up there with Marathon fuel. Your whole view on brand loyalty will change in less than half an hour.

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U-Train,

In the U.S., BP = Amoco (Standard Oil), just for reference.

I use a blend of stegosaurus, pteranadon, brontosaurus, and about 10% Pioneer 4010 hybrid with no problems. The big knock (no pun intended) on Amoco is that except in mandated markets they have almost exclusively used MTBE oxygenating additives in stead of ethanol.

One of the things I look for is a station that pumps a lot of volume, which minimizes the chances of wet fuel. Also, I look for the visible final filter in the hose or at the pump to help assure the least amount of contaminents. I generally search the pump for the octane rating decals and the alcohol notice while I'm standing there filling the tank.

 

Yes I realize the "handfull" of storage depots. It is like that most everywhere. Both Mobil and 66 use the sonoco storage in rockford which is where I spend a fair amount of my time. And the main difference is the additive they use in their tanks at the stations. Hence the difference in performance and milage.

 

I go to a few different places for gas, but the only thing I insist on is that I'm buying it from someone who's an English speaking American. It's getting harder and harder to do anymore.

 

What does that have to do with fuel quality..not cool dude..

I run 92 from bucky's My 327 hates anything less..ping ping Dog Dog...

 

Bucky's = Amoco (and I could tell you some stories about them as I know ppl that have worked there).

Around here I usually use either Shell or Exxon/Mobil, but I have used BP in the past with no problems. I go between 87/89 and 92/93 octane, depending on how rich I feel. I cant really judge much difference as I am continually under the hood for one reason or another (sometimes I think I am going to get rid of this car first chance I get).

 

Not much, but being the conversation is centering around where people get their gas, I figured it was a fair response. Tell me what's not cool about it. Why should I let $150 a month leave the US economy?

 

sunoco 93....
and they have the "turbo blue" i think its 110 octane...put a few gallons of that in your tank when u go to the track lol

 

If you believe that, you need to do some research on Gasoline and Taxes.....

flamingo..fill me in on Amoco, they are new to this area, Buckys anyway...I havent had any problems with there gas yet...

 

The commment on buying gas from someone who speaks english was not out of line. I happen to agree with it!

 

Thank you veddy veddy much

 

Gas on base, 89 octane. When away from home I find that Exxon works the best. I have gotten 34MPG on the highway using it. Not sure about the wind direction but I was doing 77MPH. Motor was winding at 2000.

 

I use Sunoco ultra 94. It makes a little more power than
the others cause of the alcohol content and high octane.

 

basically, gas is gas. Most of the companies transport their gas via carrier lines. Each company puts in xxx,xxx ammount of gas of yy quality into the line and then each withdraws the same ammount at the other end and pays the carrier the mony for transporting the gas. All their gas mixes tother in the line so pretty much each company starts off witht he same gas. They just add their own cocktail of additaves to set their gas apart from all the others. Myself, i use the cheapest gas i can get. Just as long as the car goes and the engine doesnt hammer itself to pieces, im happy.

 

I live very close(2 miles) to the Clark refinery/storage that Vader was speaking of in the south Chicago suburbs. And yes he is right. You can see all kinds of brands filling up there. In the end gas is probably gas except for the octane level. Lower octane makes my '86 carbed LG4 ping- ping, while 93 on up (when I can afford it) makes my car bling-bling.

 

ç


rx7 are weird cars when it comes to gas

I use only the cheapest I can find

 

LMAO

 

I always get phillips 66 90 or 91 what ever they have 91 is the highest i've seen here in NM. I put techron in my car once and it would run at all. I'm never using chevron again.

 

for the canadian guys i use sunocos 94 ultra...my little girl loves the high test!! then i head to canadian tire and add some more octane boost...not sure what it does but i know it cleans out the cylinders real nice like!!

iroc2nv

 

I wish I could get my hands on some 85 octane ****


and just to let you guys know as far as octane


higher octane is not going to give you more power unless you are running [list=1][*]boost[*]high compression[*]lots of timing[/list=1]

most other times the octane isn´t going to help you but hurt you


high octane gas burns slower.... part of the reason it will allow you to run higher ompression and shiz.
so if you don´t have the pressure in your cyl to speed up the comb your gas is going to keep on igniting insidey ou exhuast.... and like that is going to do you a lot of good

 

Yeh, as far as octane goes, my little chevy starts to cough if I feed it 89, put she pulls hard top end when I give it 93.

 

Don't want to make anyone jelous here but fuel in the UK is I think 92 octane as standard with super unleaded being 97 octane and available at pretty much any petrol station.

 

Whenever I need gas and whatever is convenient for me. Gas is gas.

 

mobile 89 octane from UDF or i will use sunoco or shell. nothing else. just about everything else around here is nothin but water. i $h!t you not......my car would run fine on 87 octane from shell but would not run worth a crap with bp gas....i had 93 BP with ice guard in my tank one winter and my car was in a closed garage, my fuel lines froze solid. thats about a bunch of . the temp in the garage was 10-15 degrees warmer than outside too. crap gas sucks!

 

And only $4.50 a gallon...Yikes I'm jealous......

 

Did you convert both the cost and quantitiy figures there?

Also, is octane measured the same way in the UK as in the US?

 

I run 76 110 leaded fuel in mine.

 

They measure it by the liter...Umm, petrol is 78.9p per litre. That's 2.97 pounds sterling per US gallon, which is about $4.62 per US Gallon, using $1.54 USD to the English pound. Yikes!!

If you're listening Tony Blair, we'll never give up. We'll never ride bicycles to work, or buy 25 cubic inch weenie motors. You might as well lower the fuel price because until public transport is up to scratch...and by that I mean picking me up from outside my front door, and letting me smoke, listen to my own choice of CDs at whatever volume I like, I'll never set foot on a bus. Long live the V8!!!
There you have it>>>>>

 

My 81Z doesn't seem to car what brand or octane I run in it. My 86 IROC usualy gets WAWA 93 or Crown 93. On Chevron 93 the gas mileage varies terribly (17 mpg one time and 20 the next) which was probably the station not being particular about which tank they put what octane gas in. On Mobil 93 the mileage is okay (20 to 21 mpg) but after 4 or 5 tankfulls the engine starts stalling at stoplights. It takes 4 or 5 tankfulls of WAWA with heavy duty injector cleaner to straighten it out. Done it 2X to make sure - no more Mobil 93 for me.

 

I use mobil, 76, or chevron gas in my car. I dislike arco and texaco because I've had problems in the past that were because of their gas. I have to run 91 octane, and I don't trust these stations, let alone their premium gas.

 

Chevron 87 octane