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Great mileage using 100 percent petrol

Aquineas

Aquineas

4th Genesis
Joined
Mar 9, 2010
Messages
4,326
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1,117
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113
Location
Georgetown, TX
Genesis Model Year
2020
Genesis Model Type
Genesis G70
I was in Louisiana this weekend, where they still sell 100 percent gasoline (as opposed to Texas, where it's very hard if not impossible to find), and filled my tank up with 100 percent gasoline. My highway mileage as reported by the car was 28.3 (well, that is before an hour long traffic jam due to an accident on the Atchafalaya Basin Bridge on I-10). Normally I'm lucky to see 25mpg highway (again, as reported by the computer; I know actuals are lower).
 
"Pure" gas has about 3% more energy than E10. Any increase in mpg beyond that is driver variation (people wanting to prove something may subconsciously change their driving methods). Wind can also make several % change in mpg.
 
I set the cruise whenever possible, so I really don't believe driving habits have anything to do with it. Cruise set at 75mph both places, I typically get 24ish mpg on my way to Austin and got 28.3 in Louisiana. I thought wind might be a factor, especially on Sunday because it was very windy, but going the opposite direction on the same day didn't make a difference (it was more of a crosswind than a head or tailwind). Maybe the quality of gas is better where I filled up in Louisiana, but I assure you driving habits did not vary substantially. And I'm not anti-ethanol additives, I'm against effectively not having a choice in what I put in my car. And if the ethanol laced fuel gave equal mileage, then I'd be all for it. I literally was pro "gasohol" (what they called it as a kid when I lived in Iowa), but my adult experiences have taught me to prefer gasoline in my car, and I've yet to encounter any evidence to convince me otherwise.
 
I saw a 2-2.5mpg increase with no corn gas. I know what the stats say, but that's what I saw.

Unfortunately, it's $0.50/gal more, so it just doesn't make financial sense.

However, my first foray into E0 saw no measurable gains (2 tanks). This last time, I disconnected the battery for an hour hoping that the ECU started from scratch on the timing map. Seemed to work.
 
2011 4.6

have been tracking since Mar w/ iPhone app. avg 24 mpg burning primarily 87 octane. best hwy mileage has been ~27.

in my experience (based on measurement), the in-car display reads 2.4-2.6 mpg better than reality.
 
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Aquineas said:
I was in Louisiana this weekend, where they still sell 100 percent gasoline (as opposed to Texas, where it's very hard if not impossible to find), and filled my tank up with 100 percent gasoline. My highway mileage as reported by the car was 28.3 (well, that is before an hour long traffic jam due to an accident on the Atchafalaya Basin Bridge on I-10). Normally I'm lucky to see 25mpg highway (again, as reported by the computer; I know actuals are lower).
Click to expand...

Aquenas, It only makes sense that using pure gas would return more mileage since alcohol has fewer BTUs per pound than gasoline. Worse yet the alcohol is put in to release oxygen which only helps the smog produced by older cars. Any car with an O2 sensor will just change the mixture until all the O2 is gone. Sadly this results in even more fuel waste.
Bill
 
Billfz1 said:
Aquenas, It only makes sense that using pure gas would return more mileage since alcohol has fewer BTUs per pound than gasoline. Worse yet the alcohol is put in to release oxygen which only helps the smog produced by older cars. Any car with an O2 sensor will just change the mixture until all the O2 is gone. Sadly this results in even more fuel waste.
Bill
Click to expand...
Ethanol produced from crops also causes food prices to increase, causing food shortages (including meat, since a significant portion of crops are used for cattle feed), increase in cost of living, and also reports of respiratory problems for humans.

Due to the nature of politics in the US, and the influence of farming states, US government subsidies for ethanol producing crops will probably continue for a very long time.

Good News For Corn, Bad News For You
The corn ethanol lobby gets a big break in Obama's 2015 budget proposal.
http://www.usnews.com/opinion/econo...15-budget-backs-costly-corn-ethanol-subsidies
 
Mark_888 said:
Ethanol produced from crops also causes food prices to increase, causing food shortages (including meat, since a significant portion of crops are used for cattle feed), increase in cost of living, and also reports of respiratory problems for humans.

Due to the nature of politics in the US, and the influence of farming states, US government subsidies for ethanol producing crops will probably continue for a very long time.

Good News For Corn, Bad News For You
The corn ethanol lobby gets a big break in Obama's 2015 budget proposal.
http://www.usnews.com/opinion/econo...15-budget-backs-costly-corn-ethanol-subsidies
Click to expand...


Another myth started by the minions of big oil. Corn is currently at half the price it was 2 years ago. Have you seen any reduction in food???

I didn't think so.
 
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427435 said:
And lower than in 1997.

Also, about 60% of a bushel of corn's value as feed is still retained after the distilling process.
Click to expand...
Farmers should be able to get whatever they can for corn in a free market. but the problem is that there has been massive US government subsidies for ethanol crops, that in turn has caused other problems that were mentioned above.
 
Mark_888 said:
Farmers should be able to get whatever they can for corn in a free market. but the problem is that there has been massive US government subsidies for ethanol crops, that in turn has caused other problems that were mentioned above.
Click to expand...

Group,
Regardless of any political bent, oxygenates in fuel is a BS idea. It doesn't depend on what kind of oxygenate, alcohol, MTBE (both bad and dangerous) they all lower gas mileage. It is just plain dumb to make your fuel less efficient and more expensive. I don't mind paying cents for a few detergent additives to keep my cars engine cleaner, but leave my gas alone! We all seem to forget that the original idea was to make cars cleaner, it may do so for a few older cars. If you have closed loop EFI in your car though it just makes you consume more fuel. In late model DFI cars it just wastes resources buy increasing consumption. No one can tell me that continuing oxygenates is a good idea. Not doing so is easily proven to be a win-win. Cars get better mileage and energy isn't wasted distilling corn into alcohol.
Bill
 
Mark_888 said:
Farmers should be able to get whatever they can for corn in a free market. but the problem is that there has been massive US government subsidies for ethanol crops, that in turn has caused other problems that were mentioned above.
Click to expand...

Ethanol subsidies ended in the beginning of 2012.

How about ending the subsidies that oil still gets?

What problems??? It sure hasn't been responsible for food costs increasing------------as the lack of any downward food cost trends proves as the prices have tumbled.
 
Black genesis badges emblems letters lettering chrome delete
427435 said:
"Pure" gas has about 3% more energy than E10. Any increase in mpg beyond that is driver variation......
Click to expand...

Beyond the 3% energy decrease of ethanol, ethanol needs high compression ratio(16:1) ethanol engines to effectively release its energy. Ethanol used(not burned effectively) in low compression ratio(9:1 to 12:1) gasoline engines cannot release its energy effectively. I have many years EACH, comparing 10% ethanol blends to 100% gasoline(E0) for 3 cars, showing 8%, 7%, & 5% increased mpg with E0. All engines run smoother, quieter & with a trace extra low rpm torque, such that less downshifting is necessary when ascending hills. My present 2013 Elantra is showing the same effect, of 8% mpg improvement burning E0 vs 10% ethanol blends. FYI, my Elantra has many complaints of low mpg & finally had to be downgraded in EPA mpg ratings. My present AVERAGE using E0 is 39mpg, with 15% city driving.

In essence, this post proves that ethanol engine engineers & gasoline engine engineers know how to design their specific engines.

The recent Saudi efforts to collapse oil prices is hurting low turnover stations selling E0, who can't clear their tanks of high priced E0 true gasoline as fast as high turnover 10% ethanol blend stations(Costco, Arco, others) refresh with low priced 10% ethanol blend fuels. Thus, E0 is presently selling for 25% to 40% more than low priced 10% ethanol blends.
 
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