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Gasoline: Who has the best?

S

StarsFan4Life

Golden Member
So I was filling up yesterday at a Shell at noticed that they still have sign's saying "May contain 10% ethanol". Crap! Apparently you get worse gas mileage with it. So, my question is mile for mile, who has better gas for your car?
 
Ethanol is mandated as an additive, so you're going to get it whether you like it or not.

No point in driving around trying to avoid it.

 
To hard to figure out who has the best. Each pump, while mandated by Dept of Ag still comes out differently per gallon.

You would have to take an exact amount of measured gas to a lab and test it to see which has the most potential per measured amount.
 
Originally posted by: mooseracing
To hard to figure out who has the best. Each pump, while mandated by Dept of Ag still comes out differently per gallon.

You would have to take an exact amount of measured gas to a lab and test it to see which has the most potential per measured amount.
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And this hasn't been done because? What if someone claims they have the BEST gasoline but turns out to be the absolute worst....

I would think this day in age and with gas prices the way they are that we would be more interested in different mixes of fuel.
 
They all get their gas from the same basic source. No point trying to avoid the additives that are mandated by the government either, unless you leave near the Mexican border and can get Mexican gas.
 
i just make sure i don't go to places that appear to get infrequent use - i don't want sediment buildup clogging my shit.
 
This subject has probably come up every couple of months since the first Model T, without a definitive answer. I remember a thread pointing out that Hawaii has only two refineries-all the different brands of gas there essentially comes from one or the other (I suppose a brand can include some different additives, but I don't know).

Me personally, I always bought the cheapest I could find with no problem.
 
A few years ago Shell had an additive in their 93 gas that increased, according to a study on their site, mileage per gallon. The increase was a percent or something silly like that. I always, always, always buy the cheapest gas I can find. This morning I noticed one place had $4.11 and another across the street $4.29. I only use the across the street one on the way home to pick up beer. I avoid buying fuel there.
 
Originally posted by: Skoorb
A few years ago Shell had an additive in their 93 gas that increased, according to a study on their site, mileage per gallon. The increase was a percent or something silly like that. I always, always, always buy the cheapest gas I can find. This morning I noticed one place had $4.11 and another across the street $4.29. I only use the across the street one on the way home to pick up beer. I avoid buying fuel there.
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Same here....There's a few places that are regularly 20 cents more a gallon!
 
And just because a store is branded Shell doesn't mean they sell Shell gas. Those agreements only last so long. After they expire the station will buy whatever. Entirely possible for the Shell station and the Exxon across the street got their gas from the same truck.
 
Originally posted by: StarsFan4Life
So I was filling up yesterday at a Shell at noticed that they still have sign's saying "May contain 10% ethanol". Crap! Apparently you get worse gas mileage with it. So, my question is mile for mile, who has better gas for your car?
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There's a gas station in town that used to charge the same for 89 octane with 10% ethanol as 87 octane without the ethanol. I got at least 10% worse mileage out of the ethanol blend.

Now Missouri lawmakers (in all their wisdom) have mandated that 10% ethanol be added to all regular gas. I just read this earlier in the week, and the law went into effect at the beginning of the year. I thought something was wrong with my vehicle since it was getting crappy mileage, but now I think it's from the gas. I'm going to keep a log for 2 tanks on 87 (with the ethanol) and 2 tanks on 89 (without the ethanol) and see if get more mileage per dollar on the 89.

I also read that older cars (like my '92 Cougar: see thread) don't run well on ethanol, and it can cause failure in the fuel system (like fuel pump, etc.). Surprisingly enough I started having fuel problems right around the time of the law going into effect, making me think that the companies started adding the ethanol even before necessary. I know it could be a coincidence, but I'd much rather blame the government than myself 🙂.
 
Originally posted by: Howard
Originally posted by: Fenixgoon
i just make sure i don't go to places that appear to get infrequent use - i don't want sediment buildup clogging my shit.
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You have a fuel filter.
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As does the pump at the gas station.

Oh, and I second Costco gas. Long lines though.
 
The 10% ethanol was put in the place of 10% MTBE, which was added a decade or so ago to help oxyginate the fuel to help reduce emissions. It was in the 2005 energy bill. It should have no affect on mileage. I'm not entirely sure why midwestern states seem to have a second option, but most of us everywhere else in the country just have 10% ethanol.
 
Originally posted by: BrunoPuntzJones
And just because a store is branded Shell doesn't mean they sell Shell gas. Those agreements only last so long. After they expire the station will buy whatever. Entirely possible for the Shell station and the Exxon across the street got their gas from the same truck.
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Almost everyone gets the same gas from the same refinery, not to mention where the oil comes from. IIRC Texas Oil is still supposedly the best quality.
 
gas largely comes off the same truck. however, the difference is the additives. and chevron has the best additives (and they also put more than the minimum required amount of additive in their low-grade)
 
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