Here in North Florida, the Gate gas stations at marinas sell certified ethanol free gas. Most of the pumps are actually out on fuel docks. But my local Gate gas marina is right next to my marina, and their actual pumps are on dry land by the tanks (long hose to the dock). But they also have a short hose at the pump for classic and antique cars to fill up. Price per gallon is usually about 30 cents more than the local Gate gas stations one block either side of the marina. But soooo much better for your fuel system.
Other than Gate, there is a Sunoco gas station here in Jacksonville that sells several grades of race gas, all ethanol free. They have stuff like 100 octane, 105 octane, and 110 octane, etc... all are the same price... $9.00 per gallon.
Current: 2012 911 (991) Carrera coupe - Aqua Blue Metallic
Previously owned: '65 356C, '65 356SC, '65 356 SC cabriolet, '65 356SC coupe Outlaw, '65 911, '67 912, '73 911T, '89 Carrera Targa, '89 951, '93 RS America, '97 993, '99 996, '01 996, '03 996, '99 996 (x2), '10 Cayenne S.
<--- 1922 Auto Red Bug - Driving in its purest form.
there is a Sunoco gas station here in Jacksonville that sells several grades of race gas, all ethanol free. They have stuff like 100 octane, 105 octane, and 110 octane, etc... all are the same price... $9.00 per gallon.
Most of the Sunoco race fuels are LOADED with ethanol. Much more ethanol than regular pump gas.
We use Sunoco 260 GT+ in our race cars. Sunoco rates this fuel as 104 octane. That stuff is somewhere near 85% ethanol! I believe all of their race fuels contain ethanol.
I had a waiver (called an STC) on my airplane to run autogas but it was very strict about it containing NO alcohol (ethanol). The gas stations were very coy about advertising ethanol content so I had to test for ethanol. Very simple test for pennies.
Start with a test tube (or any kind of "gas resistant" clear tube) and draw a fine line about 1/4 way up from the bottom. Fill the tube up with water exactly to the line. Now add the test gas (over the water) almost to the top (gas and water don't mix well so you'll see the line of separation). Cap the top and shake vigorously. Now wait for the mixture to all settle out. When settled and the mixture separates again, if the "water" line has increased past the original amount you put in, that's alcohol.
You can use this to compare brands for the least amount of ethanol by keeping track of your results. Since alcohol bonds with water (and gasoline doesn't) the "apparent" volume of water increases with alcohol content after shaking. FWIW - I always found that Chevron and 76 had the least (if any) ethanol content. Alas, I think California is now void of ethanol free auto fuel.
Ethanol's lower fuel economy results from its lower energy content compared to gasoline. For example, E85 contains 75,670 British thermal units of energy per gallon instead of 115,400 for regular unleaded gasoline, according to the National Highway Traffic Safety Administration. So you have to burn more fuel to generate the same amount of energy. In addition, FFV engines are designed to run most efficiently on gasoline. Some engineers we interviewed say E85 fuel economy could approach that of gasoline if manufacturers optimized engines for that fuel, however.
Yes, but there is only ~10% ethanol is most gas. So you're only talking about a total reduction in energy content of ~3.5% for a 90% gasoline mixture in comparison to 100% gasoline. At least for me that's not worthwhile chasing...