Petrocanada 94 or shell 91?

[QC-FRS]

Hi/salut,

First time i own a car that actually ask for better octane than 91! For what i've seen in my quick web search shell 91 seems to be the favorite even in car that ask for 94 because petro canada 91 is "only" 91 + addidive and also contain ethanol. Shell 91 has no ethanol.

My previous cars asked for 91 and shell was my choice. Now in Montreal region the only 94 i know is petrocanada and i'm pretty its not the ultra94 version that is available in alberta and ontario...

So? Better with a pure 91 (shell) than what seems to be a mixed 94?

[sal]

Always used Petro 91 on all my turbo cars with no problems. Alot of Subaru Guys swear that shell 91 is best for their cars. I think its personal preference. I have Been using Petro 91 on my 86.

[stateless]

At Petro stations with ultra94, all grades contain up to 10% ethanol, including 94. Shell and Esso 91 contain no ethanol. I would go with 91 over 94 with ethanol.

[kidgogeta]

what about chevron 91

[QC-FRS]

Originally Posted by kidgogeta

what about chevron 91

Not an option in Quebec... Or at least not under the Chevron name....

[Heero]

I use 94 since my cars tuned for 94.

I believe the FRS is recommended 93? I would suggest using 94 then. Ethanol just decrease fuel milage, other wise it aint so bad.

And BTW... only those stations with VPower advertised are ethanol free no??

[Motopythons]

all chevron in BC has 94 enthanol free

[Enemies]

Originally Posted by Motopythons

all chevron in BC has 94 enthanol free

I haven't had to fill up my car yet but when I do, should I be scared? I'm sure Chevron 94 isn't cheap. :P

[moniz]

Originally Posted by Heero

I use 94 since my cars tuned for 94.

I believe the FRS is recommended 93? I would suggest using 94 then. Ethanol just decrease fuel milage, other wise it aint so bad.

And BTW... only those stations with VPower advertised are ethanol free no??

Well they only offer one kind of 91 octane premium(at least in Ontario) and that's their V Power premium which is ethanol free. About the ain't so bad part, isn't ethanol a contributor to fuel system corrosion, hence why people are so against it?

Plus the owners manual does say 93 octane premium required with an * noting that in markets where 93 is not available 91 is fine with no detriment to durability or reliability of the engine, so as far as warranty is considered, using 91 consistently will have no bearing, and you won't be denied because you didn't use 93. Now, I wouldn't gamble with with anything less than 91 myself, but that's just me. Your money, your risk(I'm stating that in the general sense, not at you Heero)

[BioRage]

I like Shell 91, my gas milege is a lot better, and higher Than Petro 94, I tend to switch back and forth here and there.

[stateless]

Originally Posted by Enemies

I haven't had to fill up my car yet but when I do, should I be scared? I'm sure Chevron 94 isn't cheap. :P

I really wish we had it in Alberta—if we did, it's all I would use. My WRX ran much smoother on it, and it only cost a few more bucks per tank.

[EsoBOFH]

Chevron 94, and only Chevron.

I am not usually so brand loyal but I can state, without a doubt, that using chevron gas (87 through to 94) is better than any other fuel. Sure, all fuel comes from the same distributors and carriers - I know this. The techroline additive that Chevron uses is not just a gimmick... it is patented, highly protected, and can only be obtained from a Chevron station.

In a normal car.. say.. something with a 9:1 or 10:1 compression ratio - the difference is not detectable. If you are running a high performance car with a 12:1 compression ratio (as in the FA20) you can feel, hear, and see a difference between other fuels without techroline. I've had a few bikes (crotch rockets, which are extremely high compression and finicky when it comes to fuel) and anytime I filled up with anything other than chevron fuel.. I immediately noticed a performance loss.

Since riding bikes, I have only ever used chevron.. and a few years down the road, when I've had to go to aircare - the proof is in print. I rat bag the ass off my cars and drive them harder than anyone I know... the emissions/particulates scores I get at aircare are sometimes so low, then don't even fall into the average range for the model/year... and the trick has only been.. using chevron, and only chevron.

The shell nitrogen enriched fuels make me laugh... you know the atmosphere is like 80% nitrogen... every fuel is "nitrogen enriched" lol.

I am normally a person that will go for convenience, price, function over anything else... but i've been known to run out of fuel before finding a chevron, because i'm so picky about this...

[Reflections]

In Ontario, stick with Shell 91. Over time ethanol destroys plastic and isnt good for the fuel system. The car should get better gas millage and run at its maximum potential. Ultra 94 only comes in handy if you have a turbo vehicle and at that, to get the full potential it must be tuned for it.

Avoid ethanol when storing the vehicle for a while as well!

[QC-FRS]

Originally Posted by Reflections

In Ontario, stick with Shell 91. Over time ethanol destroys plastic and isnt good for the fuel system. The car should get better gas millage and run at its maximum potential. Ultra 94 only comes in handy if you have a turbo vehicle and at that, to get the full potential it must be tuned for it.

Avoid ethanol when storing the vehicle for a while as well!

Well i get the idea for turbo but since brz/frs ask for 93 seemed to me that it was close enough for a real need of 94.... But seems that in QC we have the choice of 94 with ethanol and 91 without.... I guess i'll change from time to time...

[EsoBOFH]

Originally Posted by Heero

Ethanol just decrease fuel milage, other wise it aint so bad.

This is true.. there is no reason to be ethanol hating (there is a reason why race cars and dragsters use alcohol fuel!).

Ethanol has a way higher octane rating then gas, it just doesn't have the same energy available - about 66% in fact. So your mileage will drop, because you have to use more fuel to get the same power when mixed with Ethanol.. the bonus, though is that fuel rated as say 87 octane, is actually higher when they add Ethanol.

Major tuners in the states where E85 is common, prefer it for their fuel in mass power cars.. (4 digit hp).. for the massive octane ratings it has. They just need to use way bigger fuel pumps and injectors to compensate for the energy loss over straight fuel.

Alcohol is hygroscopic... (it wants to absorb water from the air) which is why so many people 'hate' on ethanol. I wouldn't leave ethanol fuel sitting in a tank for a year and then expect to use it without issues.. but for daily use, today's cars are built to deal with it, and no harm is done.

When you are paying so much for premium fuel, it make economic sense to avoid fuel that's ethanol blended. Another good reason to use Chevron premium fuels... the 94 pump is always a separate nozzle from the 87-91 fuel.

[7thgear]

No chevron in Ontario

so it's either Shell 91 (which i've always liked) or Petrocan 94

[Aznek]

How about Husky?

[7thgear]

Originally Posted by Aznek

How about Husky?

http://www.myhusky.ca/station_locato...cityID=Toronto

'There are no locations that match your search criteria."

[s2kdrew]

shell should be not bad since Ferrari F-1 racing team use shell, and according to FIA the fuel they use in race car must be somewhat at least 90% same as the fuel selling to the public. That's what I remember when watching a TV show, need to do some research on this again.

[BioRage]

Originally Posted by Aznek

How about Husky?

&

Esso

=





Shell + Air Miles / Air Miles Cash
Petro + Petro Points



=

[fenton]

Ethanol blended fuels will not hurt modern cars. The deterioration of the fuel system was for old cars where parts of the fuel system used rubber that would slowly get eaten away.

Your car will run better on 94, using the most timing and making the most power.

91 will not hurt the car physically but it also wont make as much power. The manual asks for 93 for a reason. Any fuel above 91 octane will also use something to increase the ocatane, be it ethanol or MTB like some stateside companies use.

Personally I had very good results with Husky 94 in my STI, any time i would run lesser fuel knock would start to creep up in my datalogs.

[Aznek]

Originally Posted by BioRage

&

Esso

=





Shell + Air Miles / Air Miles Cash
Petro + Petro Points



=

But petro-points blow! $70 a week in gas for the last 2 years and I don't think I have even earned a free car wash yet...