V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

gas brands and its performance...

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Old Mar 20, 2005 | 12:21 PM
  #1  
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From: nj
Car: 1985 iroc-z
Engine: 305 tpi with hooker super comp exhaust
Transmission: stock 700r4
gas brands and its performance...

i usually get my gas from a coastal in my town and it lasts a pretty long time. i recently bought gas from a sunoco and i realized my gas milage went WAY down. its happened to me before with them. i hear that the coastal around my town waters down theyre gas so..i go to the flying j (witch it conoco) and its alright but..the coastal lasts longer...have u guys had any experence with different companys and noticed a difference between em?
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Old Mar 20, 2005 | 12:40 PM
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Car: '91 Camaro RS
Engine: 3.1L V6
Transmission: 700-R4
Hey as far as the best gas goes I'd use Chevron, I've used alot of Sunoco because they're popping up all over south Florida but have never noticed or heard their gas to be any better or worse then anothers.
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Old Mar 20, 2005 | 01:00 PM
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
BP/Amoco, here.
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Old Mar 20, 2005 | 03:11 PM
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From: Central FL
Car: 91 Camaro
Engine: 3.1...not hardly stock
Transmission: 700r4....not stock either
Axle/Gears: 3.73
i just switched to bp/amoco because i've heard good things about it. i can't really say anything for it yet...since i've only run a couple of tanks through it now.
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Old Mar 20, 2005 | 04:56 PM
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From: New York
Car: 91 Firebird
Engine: 3.1 V6
Transmission: TH-700-R4
Amoco here also.
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Old Mar 20, 2005 | 04:59 PM
  #6  
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From: Manchester, NH
Car: 91 Firebird
Engine: 191ci 6cyl
Transmission: 700r4
I know cumberland farms gas is horrible. I usually stick to Shell of Mobile.
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Old Mar 20, 2005 | 06:02 PM
  #7  
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From: Ogden, UT
Car: 95 Z28
Engine: LT1
Transmission: Built 4L60E with 3000 Stall
Axle/Gears: 3.23? I'm not sure
lol like the only gas station thats actually here in utah that has been mentioned is chevron I just goto a grocery store gas station for the time being, but I think they're conoco gas. There arent really any conoco stations here, just their gas
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Old Mar 20, 2005 | 08:23 PM
  #8  
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From: Chico, CA
Car: 89 Firebird, 92 RS
Engine: 2.8L MPFI, 355 TPI
Transmission: t-5, t-5
Axle/Gears: open 3.42, posi 3.42
i use pacific pride, which is shell gas(bp, right?), but thats all ive ever used, so i have nothing to compare it too.
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Old Mar 20, 2005 | 11:48 PM
  #9  
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From: Moorpark
Car: 1991 CAMARO 1968 FIREBIRD
Engine: CAMARO 3.1L FIREBIRD 455
Transmission: CAMARO 700R4 FIREBIRD TH-400
Waterd down gas would be arco my car got the worst milage ever when i used there gas i went back to chevron/mobil also i know the costco by us buys there gas from chevron i asked the attendent one night.
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Old Mar 21, 2005 | 12:25 AM
  #10  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Gas is gas, all refineries use a shared pipeline system. Like natural gas or water. The only thing different is the additives and detergents they use.

That is what you want to find out. What are they adding to it.
And even then there are gonna use similar stuff.

But actualy water in gas.....
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Old Mar 21, 2005 | 06:18 AM
  #11  
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From: Finland
Car: 83' Pontiac Firebird
Engine: 2.8 V6
Transmission: T5
The refineries get the same crude oil, but the refining processes can differ. So, in other words the gas from Shell can be a lot better thatn the gas from company x. Depends on how well the cracking/distillation has been done.
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Old Mar 21, 2005 | 10:13 AM
  #12  
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From: Central FL
Car: 91 Camaro
Engine: 3.1...not hardly stock
Transmission: 700r4....not stock either
Axle/Gears: 3.73
that's right. and, i've been told that amoco uses a better refining process on their high grade gas. if you look at 92/93 octane from somewhere else, in a glass or something, it'll have a yellowish tint to it. look at amoco's ultimate in a glass and it is clear!
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Old Mar 21, 2005 | 10:25 AM
  #13  
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From: Kirkland Washington
Car: 84 Camaro. 90 integra
Engine: LG4, 1.6 (402hp)
Transmission: 700r4, JDM ITR w/ kaaz LSD
yeah i use chevron w/ tecron!
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Old Mar 21, 2005 | 02:09 PM
  #14  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Originally posted by molopaa
The refineries get the same crude oil, but the refining processes can differ. So, in other words the gas from Shell can be a lot better thatn the gas from company x. Depends on how well the cracking/distillation has been done.
according to the Discovery Channel show on refineries gas is gas. additives are the only thing to change.

They also showed how all products use the same pipes.
gas,fuel oil, disel,........... all travel through the same pipe. They send each kind in order like a drink at the bar. putting those next to each other that don't mix well. And they then sell off that wacky mix to places that can burn any type of fuel.

They use to have "PGIS" to separate the different products.
But not anymore. They only use PIGs for cleaning.

Course we all know the Discovery channels makes stuff up????
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Old Mar 21, 2005 | 02:12 PM
  #15  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
I have seen it first hand.

Shell Vpower tanker trucks filling up on gas at the Marathon pumping station. That is just a holding station, not a refinery. They get their gas from the BP refinery by pipe line, 4 blocks away.
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Old Mar 21, 2005 | 02:54 PM
  #16  
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From: Kirkland Washington
Car: 84 Camaro. 90 integra
Engine: LG4, 1.6 (402hp)
Transmission: 700r4, JDM ITR w/ kaaz LSD
CrrrrrrazzzzzzzyyyyyyyyyYYYYYYyyyyy
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Old Mar 21, 2005 | 03:00 PM
  #17  
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From: SW Florida
Car: 91 Z28, t-top, 5.7l ZZ4 rebuild
Engine: 5.7L TPI
Transmission: 700r
Putting octane ratings aside... there is a big difference between premium and economy brands... especially for fuel injected vehicles. One of the main things to consider, is how much cleaning additives are introduced to the fuel. If you consistantly purchase "cheap" fuel, be sure to use a good cleaning additive from your local parts store. I hear that Sunoco, Chevron, and Texaco all use high levels of cleaning additives, according to the EPA.
Jim
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Old Mar 21, 2005 | 03:17 PM
  #18  
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From: Finland
Car: 83' Pontiac Firebird
Engine: 2.8 V6
Transmission: T5
Originally posted by Gumby
according to the Discovery Channel show on refineries gas is gas. additives are the only thing to change.

They also showed how all products use the same pipes.
gas,fuel oil, disel,........... all travel through the same pipe. They send each kind in order like a drink at the bar. putting those next to each other that don't mix well. And they then sell off that wacky mix to places that can burn any type of fuel.

They use to have "PGIS" to separate the different products.
But not anymore. They only use PIGs for cleaning.

Course we all know the Discovery channels makes stuff up????
Wow!

I seriously have a hard time believing that. I mean son of a bitch. Those damn gas companies can pretty much sell any kind of crap under 10 different special names. And for an additional bonus, you have small amounts of contaminants from other products.

Hell, maybe the disc channel is making stuff up
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Old Mar 21, 2005 | 03:46 PM
  #19  
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From: Central FL
Car: 91 Camaro
Engine: 3.1...not hardly stock
Transmission: 700r4....not stock either
Axle/Gears: 3.73
i know a guy who claims that he honestly gets better gas mileage when he runs amoco ultimate. he says that if he runs anybody's 87 octane that he can only drive from home to work 5 days but if he runs amoco ultimate, he says he can go back and forth 6 times. that's what he has told me a couple of times! beats me though...
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Old Mar 21, 2005 | 04:56 PM
  #20  
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From: Moorpark
Car: 1991 CAMARO 1968 FIREBIRD
Engine: CAMARO 3.1L FIREBIRD 455
Transmission: CAMARO 700R4 FIREBIRD TH-400
If i fill up at costco my gas will only last me a 240 miles per tank if i fill up at circle K i can go 300 per tank.
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Old Mar 21, 2005 | 08:27 PM
  #21  
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From: Winter park, FL
Car: 1990 Camaro RS
Engine: 3.1 V6
Transmission: TH700?
BP for me

I fill 'er up with BP/Amoco. Mainly because they are the least expensive around here, which is odd because back north it was the MOST expensive. I cant speak about the different brands but I do know that regionally speaking it is different. States all have differing emission standards, so the gas is different from one part of the country to the next. I dont have any discovery channel programs to back me up but I do remember that from the last round of price hikes.
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Old Mar 22, 2005 | 06:52 AM
  #22  
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From: SW Florida
Car: 91 Z28, t-top, 5.7l ZZ4 rebuild
Engine: 5.7L TPI
Transmission: 700r
Re: BP for me

Originally posted by cryptic
I fill 'er up with BP/Amoco. Mainly because they are the least expensive around here, which is odd because back north it was the MOST expensive. I cant speak about the different brands but I do know that regionally speaking it is different. States all have differing emission standards, so the gas is different from one part of the country to the next. I dont have any discovery channel programs to back me up but I do remember that from the last round of price hikes.
Oh yeah... that was what I forgot... there is different mixtures for diferent climates... i.e. Up north in winter, they introduce alcohol and other anti-freeze additives to keep things right in freezing weather, etc.
Jim
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Old Mar 24, 2005 | 07:33 PM
  #23  
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From: Milwaukie, Oregon
Car: 86 trans am
Engine: carbed 305
Transmission: auto
Axle/Gears: 9 bolt disc posi
Originally posted by FAST RS
Waterd down gas would be arco my car got the worst milage ever when i used there gas i went back to chevron/mobil also i know the costco by us buys there gas from chevron i asked the attendent one night.
I pulled into a gas station one time and there was a guy that had a truck with a trailer behind it,the trailer was full of a bunch of big funny looking gas cans,I asked him what he was doing,He said he works for the company that does the test on gas to make sure it is good,so I thought this would be a good time to ask him who has the best gas,He said all the big company are good,Chevron,texaco ,shell ,ect,then he said he would not even think about putting ARCO in 1 of his cars.
Bob W
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Old Mar 25, 2005 | 03:31 AM
  #24  
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From: Caldwell,ID
Car: 2005 BMW 545i
Engine: 4.4L N62B44
Transmission: 6spd auto
Axle/Gears: Rotating
Originally posted by Brazen
Putting octane ratings aside... there is a big difference between premium and economy brands... especially for fuel injected vehicles. One of the main things to consider, is how much cleaning additives are introduced to the fuel. If you consistantly purchase "cheap" fuel, be sure to use a good cleaning additive from your local parts store. I hear that Sunoco, Chevron, and Texaco all use high levels of cleaning additives, according to the EPA.
Jim

difference between premium and economy gas cleaning addatives shouldn't be much but rather from brand to brand might use different amounts


the main difference between the premium and non-premium gas is addatives they use to raise the octane
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Old Mar 25, 2005 | 03:33 AM
  #25  
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From: Caldwell,ID
Car: 2005 BMW 545i
Engine: 4.4L N62B44
Transmission: 6spd auto
Axle/Gears: Rotating
also to answer the question as far as what gas I use. mainly maverick gas because around here it is the cheapest that or 7-11

with gas mileage don't notice much of a difference between any of them or performance.


only time I by other then those is when one of the cheverons start selling 86 octane rather then the 87 when I'm driving my mazda


since I have the honda right now.... well I'm still learning what it likes
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Old Mar 25, 2005 | 10:55 AM
  #26  
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From: ****SoCal, USA****
I go to a local grocery store.
IF I spend over $25 of groceries, I get a $.05 back per gallon at the grocery store gas station.
IF I spend $100, I get $.10 per gallon back
I change my gas milage by the pressure of my right foot. And conditon of driving/engine.
I go for cheapest water I can find, as long as I get there.
Other day I got 12 1/2 gallons, had a $.10 coupon & got back $1.30. Car runs fine.
FastRS, it's the local Food For Less (Kroger/Ralphs) AND no membership fee to make me think I'm saving money. Cause this stations price is usually less than Costo gas anyway!
Each region will definetly add the additives per EPA specs.
CA has it's "own" refineries cause we got the
"laws" mandating the use of "this formula". And it is one of, if not the "most expensive formulas around", thus other refineries won't make as much money creating it for "us" in CA.
Politics aside, I couldn't care as long as my car runs on whatever water I can buy cheapest.
PS Torque rules! So do uncongested roads IN LA, CA to increase my milage!
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Old Mar 25, 2005 | 02:33 PM
  #27  
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From: Ogden, UT
Car: 95 Z28
Engine: LT1
Transmission: Built 4L60E with 3000 Stall
Axle/Gears: 3.23? I'm not sure
Originally posted by KED85
I go to a local grocery store.
IF I spend over $25 of groceries, I get a $.05 back per gallon at the grocery store gas station.
ours is like that but 5 cents for 20 bucks I think it is, 10 cents for 60, and 15 cents for 90 or more
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Old Apr 1, 2005 | 01:18 AM
  #28  
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From: Chicago IL
Car: 89 tta trans am
Engine: 3.8 L turbo
I use shell gas and I do notice about a 20 mile increase in mileage. No science to back it up just seat of the pants stuff. Also if you over inflate your tires a few pounds you do get a little better highway miles. Nothing crazy just 3 or 4 pounds.
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Old Apr 1, 2005 | 01:43 AM
  #29  
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From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
You folks do realize that gasoline in the US is transported through a vast shared pipeline network.. and the gas that Shell, for instance, pumps into the system from their refinery is not the same gas that Shell pulls out of the system at their distribution station. You've got just as good a chance of getting Shell-refined gasoline at a Chevron, Sunoco, AM-PM, Circle K, or mom & pop gas station as you do getting it from a Shell station. All raw gasoline in the US is effectively the same, only the additives differ. Welcome to the land of hype
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Old Apr 1, 2005 | 07:03 PM
  #30  
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From: Chicago IL
Car: 89 tta trans am
Engine: 3.8 L turbo
If all gasoline is the same then are the octane ratings a sham too?

then it should't matter what gas i use right?

interesting
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Old Apr 1, 2005 | 11:39 PM
  #31  
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From: UCIrvine or SFV, CA
Car: 1999 Pontiac Trans Am
Engine: LS1 - 346 ci
Transmission: 4L60E
I wouldn't say that electragup
I filled up with 89 octane in my LS1 a few tanks ago, and I noticed the car pulled just a little less harder than it usually did on 91.

Bah I miss running 87 with my 'Bird...
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Old Apr 7, 2005 | 02:49 AM
  #32  
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From: Caldwell,ID
Car: 2005 BMW 545i
Engine: 4.4L N62B44
Transmission: 6spd auto
Axle/Gears: Rotating
Originally posted by electragup
If all gasoline is the same then are the octane ratings a sham too?

then it should't matter what gas i use right?

interesting


um think your missing something there


even though gas from different companies are the same stuff shipped to them they can still have different octane ratings which is based upon there ability to resist knock


that's all octane rating is


they are just saying when comparing 87 octane from one company to another it is the same gas
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Old Apr 7, 2005 | 02:51 AM
  #33  
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From: Caldwell,ID
Car: 2005 BMW 545i
Engine: 4.4L N62B44
Transmission: 6spd auto
Axle/Gears: Rotating
Originally posted by TechSmurf
Welcome to the land of hype


you mean like how premium gas is like some miracal cure for a car doing everything from cleaning deposits, running cleaner, giving tons more power and fuel economy, running cooler, sounding better, and all the other things that premium fuel is claimed to be?
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Old Apr 7, 2005 | 03:41 AM
  #34  
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From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
Octane ratings do differ. The gasoline pumped through the pipeline system is sorted. The same system is also used to pipe diesel, kerosene, etc... the fuel is sent through in batches. i.e. a batch of 91, a batch of 89, etc. There is some mixing between the two when the type of fuel flowing is changed, however the net result is minimal. For those fuels that are incompatable (i.e. the mix between diesel and gasoline, or gasoline and kerosene) the mixture is sold as.. well.. "mix", as I recall.. to companies that have need fuel for an application which doesn't care what it's burning.
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Old Apr 7, 2005 | 06:17 AM
  #35  
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From: ****SoCal, USA****
All this is all becoming a moot point due to Chevron Texaco now buying Union 76.
Can you say less competition and higher prices?
Less gas stations and higher prices?
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