Mislabeled Gas

[MurderousPandas]

Originally Posted by Tcoat

Here they will sample from each pump. It isn't just a paper chase it is an actual physical test to ensure that what it says is it is it actually is. I doubt that they have the consumer's interests in mind so much as to make sure they are getting every penny that they are supposed to. Can't have stations selling low octane stuff at high octane prices and not submitting the tax on the difference!

It is important to know that regular gas here is around $3.50 a gallon and the premium can be $4.50 to 5.50 a gallon so the stations stand to make a tidy profit (and the province lose a tidy sum in taxes) if they can slip you regular for premium prices.

Damn, such a sad world we live in where we have to misrepresent things to make money. Prices here are like 2.20 low and 3.00 high octane, so the profit they'd make ripping people off wouldn't be worth the lawsuit they could get into.

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[Tcoat]

Originally Posted by MurderousPandas

Damn, such a sad world we live in where we have to misrepresent things to make money.
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LOL No doubt some cave man made that exact same comment when he was given rhino meat instead of the mastodon he was promised in exchange for his nice sabretooth pelt.

It isn't new and it has always happened. It is just easier to hear about it now.

[cjd]

Unfortunately, the only easy way to tell (without actually subjecting the gas to proper analysis) is to start on 93 and then go to the suspected 90; The ECU will only progressively decrease compensation for knock, etc. that may have shown up on 90 octane. It will react very quickly if you add 'bad' gas.

I did this once on my old car, stupid mistake - I was distracted and went for the pump color I was used to, not noticing it was a station that still had a separate pump for each octane... the performance difference was very obvious.

That said, that 90 octane may be better than Cali 91 still...

[MurderousPandas]

Originally Posted by cjd

Unfortunately, the only easy way to tell (without actually subjecting the gas to proper analysis) is to start on 93 and then go to the suspected 90; The ECU will only progressively decrease compensation for knock, etc. that may have shown up on 90 octane. It will react very quickly if you add 'bad' gas.

I did this once on my old car, stupid mistake - I was distracted and went for the pump color I was used to, not noticing it was a station that still had a separate pump for each octane... the performance difference was very obvious.

That said, that 90 octane may be better than Cali 91 still...

Knock would be present, but i think fuel trims would be most noticeable. When i switched from e85 to 93, my fuel trims were insane, even while switching properly, but flkc didn't seem too bad unless you're flooring it, which i suggest not doing because the ECU has to learn.

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[Scrappydoo]

Was it labelled as petrol?

[cjd]

Originally Posted by MurderousPandas

Knock would be present, but i think fuel trims would be most noticeable. When i switched from e85 to 93, my fuel trims were insane, even while switching properly, but flkc didn't seem too bad unless you're flooring it, which i suggest not doing because the ECU has to learn.

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If you can watch trims and log, as you say: you can tell. I was under the impression that no such logging was available, so you'd have to go by feel.

[MurderousPandas]

Originally Posted by cjd

If you can watch trims and log, as you say: you can tell. I was under the impression that no such logging was available, so you'd have to go by feel.

Oh. I have an OFT. Really useful tool, my friend even has one for his Fiat. I'm sure some other OBD scanners/readers can pick up on it too.

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[oldgunfan]

Originally Posted by Webby

Hey Guys

So I've been getting gas regularly for the past couple months from a gas station that says on the pump, 93 no ethanol. It is the only one near me that I know that sells 93 no ethanol. I am also running the 93 OFT stage 1 tune.

Today, I went and filled up at said gas station and when I went to pay I made the comment that they are the only gas station around here that sells 93 no ethanol, to which the cashier exclaimed it is not 93, it is 90. So I said well you should change to label on the pump and cashier replied I'm just a button pusher.

Now I've had a few fill ups with the normal 93 from shell but mostly have been from this particular gas station. I'm going to log my drive to and from work tomorrow to see if everything looks fine but should I be concerned? The only abnormal things I have notice is that car seems a little sluggish sometimes but that was only a couple times. Should I flash to 90 till the tank is gone?

Where do you live? your location says U.S.A- kinda big place. I ask because I also have 93 0% ethanol in three places by my house and I'm running OFT 93 stg2 custom OFH tune with absolutely no problems. Even if you do have only 90oct you should be able to get by with the OFT 91oct tune.

[jerbull]

is it possible they were referring that it was 90% gasoline 10% ethanol and not ethanol free??

[MurderousPandas]

Originally Posted by oldgunfan

Where do you live? your location says U.S.A- kinda big place. I ask because I also have 93 0% ethanol in three places by my house and I'm running OFT 93 stg2 custom OFH tune with absolutely no problems. Even if you do have only 90oct you should be able to get by with the OFT 91oct tune.

You can, but rule is that octanes higger than the tune's rating is okay, octane lower than the tune's rating is not. The car will even run on 87, but should only be done in an emergency.

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