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#1 2005-05-30 21:09:16

BigChees
Member
Registered: 2005-05-13
User Number: 27
Posts: 43

Does the brand of the fuel make a difference?

Within one block area (in S. Jersey) I have 4 gas stations ranging from non name brand to Shell, Mobil and so on.  They range from 2.08 to 2.38 for premium.  Does it matter which brand I use.  Obviously the cheaper the better but if it affects the overall performance I might reconsider.  Any info is appreciated.  I am not interested in racing just everyday driving.


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#2 2005-05-30 21:19:15

Spartanfool
Red 92x 5 speed Aero
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From: Ada, Michigan
Registered: 2005-05-16
User Number: 54
Posts: 344

Re: Does the brand of the fuel make a difference?

My local Shell station has 93 octane Premium.  The "no name" brands have 91 octane.  For 1 cent more per gallon, I'm buying the Shell.  Any other comparisons?


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#3 2005-05-30 22:48:51

eurospeed
Will race for food.
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Registered: 2005-05-13
User Number: 29
Posts: 1099

Re: Does the brand of the fuel make a difference?

Definitely try for the highest octane in your area first...usually 93.  Mobil is what I try to use simply because they tout adding some unique additives to the premium blends.  Sulfur content is also an issue amongst brands, but I've had a hard time figuring out which is better.

If I had a Chevron near me, I'd choose them over anyone simply because they add Techron (best fuel additive around) to their gas.


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#4 2005-05-30 23:19:08

eqlized_aero
Forum User #2
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From: H-Town, Michigan
Registered: 2005-05-10
User Number: 3
Posts: 5856

Re: Does the brand of the fuel make a difference?

It's really subjective...

My sister was working in PR at GM in their Hybrid Vehicles/Environment department. They have complied tons of information on which gas is the best for fuel economy, emmissions, etc.. She swears by Shell based on the information that GM has gathered. However, a good family friend was VP of Philips Petroleum about 15 years ago, based on their studies at the time Mobil/Exxon had the best additives.

So what's your flavor? I stick to Flying J because they usually only differentiate regular and premium by 10 cents rather than 20 cents like most other places in Michigan, their premium is 93 octane, and on top of that their prices are generally some of the lowest in the state (you can check them on their website). I also like Amoco/BP right now because they give you a chance at winning free gas for life if you buy more than 8 gallons of Ultimate (93 octane).


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#5 2005-05-31 00:29:29

T-St Saab
Member
Registered: 2005-05-31
User Number: 122
Posts: 33

Re: Does the brand of the fuel make a difference?

I have to admit that my old WRX wagon seemed to like Shell and Unocal better than other brands (including costco).

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#6 2005-05-31 08:19:39

BigChees
Member
Registered: 2005-05-13
User Number: 27
Posts: 43

Re: Does the brand of the fuel make a difference?

What about adding "additives" from the bottle?  Anybody does that.  By the way thanks for the info.  Did not think they might have different ratings for premium.


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#7 2005-05-31 08:53:47

eurospeed
Will race for food.
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Registered: 2005-05-13
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Posts: 1099

Re: Does the brand of the fuel make a difference?

BigChees wrote:

What about adding "additives" from the bottle?  Anybody does that.  By the way thanks for the info.  Did not think they might have different ratings for premium.

Yes, that's what I do.  I pretty much use Mobil exclusively and throw in Techron every few oil changes.


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#8 2005-05-31 10:05:44

Nereus
Totaled 6/4/06 with just 6,241 miles
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Registered: 2005-05-24
User Number: 88
Posts: 533

Re: Does the brand of the fuel make a difference?

Buy from the busiest station that has your octane, "fresh" fuel is best.  Fuel mixtures change with the climate (winter gas is different than summer gas).  The busy gas station will likely have a more current blend.  There are some minor additive issues with the various brands, but I think that is less important than 'fresh gas'.

High octane is not generically better or worse than low octane.  Octane is a measure of how quickly a gas burns, higher numbers are slower burning.  High compression engines 11:1 and higher usually need the slower burn of 90+ octane to prevent predetonation (knocking & pinging) which is actually small fires started by the high compression before the piston has reached TDC (Top-Dead-Center).  Feel free to try the medium and low octanes, if you hear knocking and pinging then you went to low, stay off the turbo (which increases compression ratio)!

100 octane 'racing gas' is a complete waste unless your engine requires it to prevent predetonation.


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#9 2005-05-31 10:21:34

graff92x
Member
Registered: 2005-05-17
User Number: 59
Posts: 34

Re: Does the brand of the fuel make a difference?

i liked sunoco cause they have 94 octane.


maybe?

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#10 2005-05-31 15:33:21

talo
Guest

Re: Does the brand of the fuel make a difference?

sunoco still have 94? all i see is 93 anymore for the highest grade sunoco

 

#11 2005-05-31 18:31:45

eurospeed
Will race for food.
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Registered: 2005-05-13
User Number: 29
Posts: 1099

Re: Does the brand of the fuel make a difference?

talo wrote:

sunoco still have 94? all i see is 93 anymore for the highest grade sunoco

Samehere...I haven't seen anything above 93 in CT.


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#12 2005-05-31 22:03:51

eqlized_aero
Forum User #2
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From: H-Town, Michigan
Registered: 2005-05-10
User Number: 3
Posts: 5856

Re: Does the brand of the fuel make a difference?

Sunoco in MI has 94 (Their full range is 87, 89, 93, and 94).


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#13 2005-06-01 00:45:25

talo
Guest

Re: Does the brand of the fuel make a difference?

Stopped seeing the 94 grade in NY and MA for a few years ago. They now sell the 93 as they did the 94. Wonder if NY/MA/CT have some law that prevents a 94. Additives for clear air? Who knows.

 

#14 2005-06-01 02:15:28

RPW Motorsports
Member
Registered: 2005-05-13
User Number: 21
Posts: 31

Re: Does the brand of the fuel make a difference?

For those who live in wonderful California (Land of 91 Octane), the brand DOES matter. Now if you are still stock, I would say go for the cheapest 91 around. If and when you get "reflashed" or do other fuel/timing/boost changes please run 76 FUEL. Vishnu and other Cali tuners have noticed up to a 10 whp difference with 76 verse other name-brand fuels. 76 has the most consistent octane rating available currently. To that is worth the extra $....


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#15 2005-06-01 09:57:23

kutch
blueAero
From: Upstate NY
Registered: 2005-05-16
User Number: 51
Posts: 153

Re: Does the brand of the fuel make a difference?

What part of NY are you in? Upstate Sunoco still has 94...

kutch

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#16 2006-11-04 14:10:45

remstarasianboy
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Supporter
From: LA/OC County
Registered: 2006-07-31
User Number: 1239
Posts: 2773

Re: Does the brand of the fuel make a difference?

So I use 91 with the additive....  am I wasting my money?  should I just do the 87 at chevron with techron?


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no more.  2005 Saab 9-2x Linear

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#17 2006-11-04 14:20:56

Topher
e-famous
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From: moderating
Registered: 2005-10-07
User Number: 844
Posts: 15231

Re: Does the brand of the fuel make a difference?

arrow-up arrow-up  I used regular in my Linear when I had it.  No pinging issues.


And here come the one uppers  arrow-down

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#18 2006-11-04 14:34:46

wtlwdwgn
Supporter
Supporter
From: Billings, MT
Registered: 2005-11-28
User Number: 906
Posts: 492

Re: Does the brand of the fuel make a difference?

arrow-up In the land of 85.5 Regular roll I use just that and I've not noticed any difference in power or mileage.


Steve

06 92x Aero, Arctic Silver, 5 MT, Leather, Roof, Cold, HIDs, 17s, gone to TX but still in the family (sigh)
11 Subaru Forester Premium, 4EAT, really big Roof, 17s

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#19 2006-11-04 14:48:29

Snaab9-2
Your Arms Off
From: Delaware
Registered: 2005-06-20
User Number: 283
Posts: 4211

Re: Does the brand of the fuel make a difference?

Gas is gas.  It all comes from the same rack.  The additives are not that big of a deal.  Add some Techron once or twice a year if you are really worried.

I would be more worried about where I bougt my gas than what brand.  A lot of older stations or poorly run stations have shit and/or water in their tanks and some don't even have filters!  down

Last edited by Snaab9-2 (2006-11-04 14:53:55)


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#20 2006-11-05 02:33:26

charles
Member
From: Riverview, FL
Registered: 2005-06-05
User Number: 165
Posts: 185

Re: Does the brand of the fuel make a difference?


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#21 2006-11-05 08:49:16

dermotti
Member
Registered: 2005-06-26
User Number: 359
Posts: 157

Re: Does the brand of the fuel make a difference?

I only buy from newer gas stations, Brand doesnt really matter.

I have had too many bad experiences from crap gas from old tanks.


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#22 2006-11-05 09:09:26

Scargo
Freely Inhabiting the Space I'm In
Supporter
From: Hancock, NY
Registered: 2005-06-15
User Number: 227
Posts: 14179

Re: Does the brand of the fuel make a difference?

kutch wrote:

What part of NY are you in? Upstate Sunoco still has 94...

kutch

Where upstate. I'm upstate (Southern Tier) and there is NO 94. Not that 94 is even close to necessary for a stock (or probably even Cobb Stage 1) so it's a waste of money. The tune of my //S6 OTOH is pretty sensitive to octane, and I'd love the access to 94 to provide a little headroom. It has complained on some 93's, believe it or not Mobil/Exxon seems to be somewhat lower in the acceptable "93" range, BP-Chevron/Shell/Sunoco 93 no problem but it's close.

Scargo


1995.5 Audi //S6, Black/Ecru; MRC Stage 2, Eibach/Bilstein, RS2 BBK, HID's, Eurotails
2005 Saab 9-2X Aero Satin Grey; Cobb STX tune/Cobb 25 mm FSB, 22mm solid adj RSB/H6 upgrade/Noltec Camber Plates/STI Pinks, Koni Inserts/Whiteline Rear Stress Bar/Izixhood/Stromung DP, Crucial HF Kitty, STi catback, Hella MicroDE fogs, color keyed/polished roof rails.

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#23 2006-11-05 09:13:06

Scargo
Freely Inhabiting the Space I'm In
Supporter
From: Hancock, NY
Registered: 2005-06-15
User Number: 227
Posts: 14179

Re: Does the brand of the fuel make a difference?

remstarasianboy wrote:

So I use 91 with the additive....  am I wasting my money?  should I just do the 87 at chevron with techron?

I don't recall what the manual says to run in the Linear, but I'd be running 87 with NO additives is fine. Techron shouldn't be used frequently, probably every other oil change in the tank JUST before an oil change. If there is any seep past the rings, Techron can break down the oil in the sump slightly, at least according to Chevron and per the recommendations of Audi. IMHO, with your linear, run regular unleaded and Techron every 10K to 15K miles (every other oil change if you use a different oil change interval).

Scargo


1995.5 Audi //S6, Black/Ecru; MRC Stage 2, Eibach/Bilstein, RS2 BBK, HID's, Eurotails
2005 Saab 9-2X Aero Satin Grey; Cobb STX tune/Cobb 25 mm FSB, 22mm solid adj RSB/H6 upgrade/Noltec Camber Plates/STI Pinks, Koni Inserts/Whiteline Rear Stress Bar/Izixhood/Stromung DP, Crucial HF Kitty, STi catback, Hella MicroDE fogs, color keyed/polished roof rails.

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#24 2006-11-05 09:30:17

ixiz
will drive U crazy...
Supporter
From: Atlanta, GA
Registered: 2005-11-05
User Number: 886
Posts: 5683
Website

Re: Does the brand of the fuel make a difference?

shell because i have the MC that gets me discount for every gallon i pour in


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#25 2006-11-05 10:06:10

lizzardo
Sooper Genius
Supporter
From: SF Bay Area, CA.
Registered: 2005-06-04
User Number: 158
Posts: 4544

Re: Does the brand of the fuel make a difference?

I use 87 octane in my Linear with no problems whatsoever.  I usually get 76, but based on where I need to fill up, there's a Shell station and a Chevron station I use as well.

As a side note, when MTBE was still in use here, I'd consistently see 5-7% better mpg in my motorcycles with 76 (ethanol) over Chevron (MTBE).


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