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Author
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Topic: Will one brand of fuel prevent detonation better than another?
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QWICK46
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Member # 1843
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posted
 
 
Hi all,
Last night I posted about troubles with my car after a Timing Adjuster installation. This morning, after thinking about it, I reset the computer, and that seemed to help my issues. Then, I started playing with the timing, reseting the computer after each ajustment.
My problem now, is even with conservative timing adjustments I'm getting a little detonation at WOT. At the moment, I don't hear it until I reach 3rd gear, and after a little experimentation this morning, I've settled on 13*, for now. As long as I don't lay into it, I don't hear any pinging.
My question is in the threads topic: What I really want to know is, can anyone make a call on what brand of fuel is superior to the others when it comes to detonation. Up to now, I've been running 91 octane ARCO. I realize it's a cheaper brand, but the car has run great on it up to now.
My only other engine mods are Steeda's pulleys and a C&L 85mm MAF with their Trueflow pipe.
Any suggestions would be welcome.
Thanks,
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Michael
'02 GT ~ sold for a Big, Slow Dodge Ram
'03 SV650S
'04 R1100S ~ The daily driver
Posts: 243 | Registered: Sep 2002
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saleen00925
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Member # 1302
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posted
all gas is the same, people don't believe me but it's true. they all ship their gas through the same pipelines, they put in a barrel in texas and can take out a barrel in california that probably wasn't theres to begin with. THE ONLY THING THAT IS DIFFERENT IS THE ADDIDTIVES that are put on right before they head to the pump stations which may include some kind of octane booster that may help, but basically they are ALL THE SAME!
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-Adam Cate
00' Saleen #00-925
3.55 Factory gears, 80mm MAF
13.7 @102mph
2 12" MTX 7000's pushin 1000W
[IMG]http://www.saleen00925.com/images/saleens3small.jpg[/IMG]
Saleen00925.com
Posts: 244 | From: Sacramento CA | Registered: May 2002
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Elapid
GOROBGO
Member # 50
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posted
well, when i get gas from some stations, my car runs like shit, from other stations, it runs great...
some gas has MTBE (methyl t-butyl alcohol) which is bad for our drinking water, other gas has methanol in it (76).
you can really tell a difference here in california since the 91 octane crap they sell is borderline for my supercharged cobra...
i seem to always keep a bit of race gas in the tank for safety's sake.
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98 Cobra
83 Notch rolling chassis - fs
Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000
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98slowhoe 'FIFTYLX'
Uncle Frank
Member # 895
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posted
All Gas Is not the same. It might come all in the same barrells, but the companies re-fine there gas differents ways and take different steps. All the steps all lead to making Gas but there is a purity issue in the differant ways of Re-fining the oil. 76, texaco, and other fuel companies all have there own Refineries, you can go to LA and see all the different ones. 76 as of now is the best gas out there, arco is somewhat low on the scale. Don't think I made this shit up either, my Uncle has worked at the 76 Re-finiery in Lomita(so-cal) for over 35 years now and thats what he has told me about it in the past.
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AKA Franky Freaking 5 liter
Advanced Engine Development
SCT dealer
Dynotuning
Engine building
916*275*8212
88 4runner on 42's
Posts: 4206 | From: Folsom | Registered: Feb 2002
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98slowhoe 'FIFTYLX'
Uncle Frank
Member # 895
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posted
Double post
[ March 16, 2003, 12:08 PM: Message edited by: 98slowhoe ]
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AKA Franky Freaking 5 liter
Advanced Engine Development
SCT dealer
Dynotuning
Engine building
916*275*8212
88 4runner on 42's
Posts: 4206 | From: Folsom | Registered: Feb 2002
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
I used to have an old Chevy 350 work truck that would detonate on everything except Chevron!?!!!...
My boss at the time told me that his truck only runs on Chevron..I was out of my way in San Jose and decided to pick up another brand of gas(thinkin all gas was the same), When my boss used the truck the next day he asked me what brand of gas I used becuase the truck was "pinging".!!!?!!..My old boss and other co-workers proved that the truck would only run on Chevron to me many times...
Basically, if your trying to tune your car you should change as few variables as possible, like different gas, that way you'll know its not the gas or its something else next time..Keep in mind even if your running your car at night vs. 12o'clock noon your car will run differently because of the air temp and humidity etc...
I run Chevron 91... ![[patriot]](graemlins/patriot.gif)
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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DropTopFox
drama
Member # 1689
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posted
If all gas isn't the same check this out. My dad is a truck driver for Mother's cookies and there was a fill up station for all the tanker trucks right across from the old Mother's depot. I used to sit there and watch all different tanker trucks fill up from the same tank. ![[Eek!]](eek.gif) 76, Chevron, Shell, Citgo, Arco, Exxon, and so on. It was amazing. They all advertise these adds that they put "Techron" or "pro-power" in their gas. ![[Roll Eyes]](rolleyes.gif) I don't know. I saw all these tankers fill up with the same stuff from the same whose even with my very own eyes. Unless these supposed additives are put in the tanks at the gas station after the 87 or 89 or 91 or what have you is put into the tanks at the station. But I don't think so. If that's not the case, then all gas IS the same. I swear to god, I was shocked when I found this out too. Now I just laugh cause I know the truth. ![[Big Grin]](biggrin.gif)
It's all about who has the better marketing ![[Whoo Whooooo!]](graemlins/woowoo.gif)
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Go out and do something for yourself today everyone, quit depending on others
-Me
http://www.CaliforniaFords.com/cgi-bin/album.pl?album=00001689
Posts: 4003 | From: San Bruno | Registered: Aug 2002
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griffined
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Member # 1330
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posted
Based on some other message boards, some of the station brand specific additives are added to the tanker trucks at the distribution terminal, and are slosh mixed on the way to the stations. The same truck could return later in the day empty of gas, fill up, and have different or no additives added before going to other stations.
[ March 16, 2003, 06:06 PM: Message edited by: griffined ]
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2001 Cobra Vert #678 of 3384
269 SAE rwhp 279 Tq stock
2000 Cobra R #154 of 300
395 SAE rwhp 398 Tq
1986 Mustang SVO daily driver
Posts: 207 | From: Daytona Beach, FL | Registered: May 2002
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eddiej50
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Member # 1169
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posted
if you think all gas is the same ,try this test take a sample of chevron Gas and compare to one of the off brands like Arco and tell me which one is clearer and which has a bunch of setiment floating down at the bottom of the container .I guratee you the chevron will be much clearer and cleaner .I know this because I have several friends who work at the refineries in richmond .Yes some companies to buy there gas from the same refineries but each refinery is not the same .
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You might be bigger than me ,but I aint afraid to run from you .
99 Gt
Posts: 337 | From: Manteca | Registered: Apr 2002
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Gear Head
JARED
Member # 779
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posted
Some of you guys kill me wheny ou say some tankers fill one station then go acrosss the street to another station and fill up their tanks.
Does anyone realize that there are chambers and baffles in a tanker truck??
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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Jerm95gt
Diapers
Member # 1239
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posted
quote:
Originally posted by 98slowhoe:
All Gas Is not the same. It might come all in the same barrells, but the companies re-fine there gas differents ways and take different steps. All the steps all lead to making Gas but there is a purity issue in the differant ways of Re-fining the oil. 76, texaco, and other fuel companies all have there own Refineries, you can go to LA and see all the different ones. 76 as of now is the best gas out there, arco is somewhat low on the scale. Don't think I made this shit up either, my Uncle has worked at the 76 Re-finiery in Lomita(so-cal) for over 35 years now and thats what he has told me about it in the past.
werd
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I miss you StoplightWarrior :(
Posts: 627 | From: Martinez | Registered: May 2002
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166 Merlo
FELONY
MOTORSPORTS
Member # 1549
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posted
Best way to go about it is find out for your self. I went from Arco's 87 octane to (76's) 91 octane. I myself noticed a difference. So that is what I usually choose to pump based on experience.
For the most part I hear that you're suppose to pump the lowest octane you can without noticing any pinging or sacrificing any performance. I'm still switching all the time between octanes to see a difference. I have yet to try octane boosters, anyone have anything to say about those???
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'89 - Boss Coupe
'70 - Drop Cutthang
'68 - Cougnut
'87 - 0166, Its real
Posts: 3953 | From: Thebay | Registered: Jul 2002
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Gear Head
JARED
Member # 779
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posted
quote:
Originally posted by 87 Saleen:
Best way to go about it is find out for your self. I went from Arco's 87 octane to (76's) 91 octane. I myself noticed a difference. So that is what I usually choose to pump based on experience.
For the most part I hear that you're suppose to pump the lowest octane you can without noticing any pinging or sacrificing any performance. I'm still switching all the time between octanes to see a difference. I have yet to try octane boosters, anyone have anything to say about those???
I use premium 91 octane from 76 and the best differnce I notice is every 3000 miles when I throw some fuel injector cleaner through it.
![[Smile]](smile.gif)
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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Hungry Hippo
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Member # 537
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posted
i notice my gas mileage turns to shit when i use 91 octance arco. i normally run 89 chevron or 76. i think arco just sucks ass, i been running no name gas from small gas stations lately and i dont notice anything.
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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Jerm95gt
Diapers
Member # 1239
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posted
I agree with hiipo. I use to use arco all the time and my car ran fine but i switched to chevron and noticed a huge increase with gas mileage. Since then i always use Chevron. Every once and a while when the local chevron is locked up i go to arco and my gas mileage suffers as a result.
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I miss you StoplightWarrior :(
Posts: 627 | From: Martinez | Registered: May 2002
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S281 01-570
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Member # 1451
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posted
I used to think all gas was the same until I started riding V-twins. With four cylinder performance bikes you could not tell any difference between brands, but with twins (750 Suzuki Intruder, 1100 Yamaha Virago and FXRS Low-Rider) the difference between fuels was very obvious. Cheap gas and even Union 76 had all three bikes missing and pinging before I got 5 miles from the station. This was always running Premium. Chevron was the best gas I got, followed by Texaco and Shell. Anything else and the bikes ran like crap. An extra 6 cylinders helps to mask the missing and knocking but bottom line is tune from Chevron, Texaco or Shell and it won't get any better. And I too still, even using the better fuels, run fuel injector cleaner about once a month.
Posts: 13 | From: Central CA | Registered: Jun 2002
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QWICK46
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Member # 1843
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posted
Just an update:
Yesterday, with the low fuel light on I pulled into Chevron, and after leaving the station, took the car up to redline in 1st, 2nd & 3rd and didn't hear a hint of a ping. I am now a beleiver, not all gas is the same, and this weekend I'll see how the car does at 15*.
![[worship]](graemlins/worship.gif) Chevron
Posts: 243 | Registered: Sep 2002
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RO2USH
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Member # 2002
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posted
Chevron has always been number ONE in my book, however I used to work at a 76 station in LA as a pump jockey, and I used to talk to the drivers every once in a while. They said that yeah there are definately differences, but if you want good cheap gas go up to the gas station in the middle of no where, and buy from them, that is if you normally use the 87 octane, don't do it if you want only premium. He said that usually by the time they got up there the 87 was usually mixed in with a little bit of 91 so you were basically getting 89 octane at 87 prices. Just a tid bit of info, I don't know if it was true or not, that's just what the drivers said.
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2002 Roush FR500
2004 Cobra
1965 GT 350 Clone
2003 Ducati 999
Posts: 286 | From: Sacramento | Registered: Oct 2002
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CobramanPhil
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Member # 2170
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posted
Let me just throw this out there. The quality of gas is also affected by age. If you go to a well used station (lots of people) chances are you will be getting "fresher" gas as compared to an identical station brand out on 5 somewhere where customers are few...just something to think about... ![[Cool]](cool.gif)
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2013 Shelby GT500
2011 Porsche 911 TurboS/AWD
2014 GSXR750
2002 GSXR750 Track Beater Bike
2016 Explorer Unlimted
Posts: 1016 | From: California, Bay Area | Registered: Dec 2002
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JdubO7
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Member # 1973
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posted
I personally feel there is a difference. I was putting 89 chevron in my mustang when I first got it and it ran just fine. Adjusted the timing and got a the famous ping ping ping, put in 91 cheveron to compensate for the timing and car ran better than ever. I'm sold on 91, cost more $$ so just invest in a beeeeeter car.
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Dynomax Mufflers/Headers/Pullies
65mm TB/76mm MAF System w/K&N
Hurst Short Shift/MSD Ignition
Electric Fan/3 Core Radiator
Ford 3.55's
Waiting in living room for install:
King Cobra Cluth
Looking for deals on:
Pony Rims w/tires
130 - 200 amp alt.
Posts: 65 | From: CA | Registered: Oct 2002
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