What You Can Do
If you want ethanol out of your gas, good luck. Not only is it dangerous to perform, but expect the EPA or some other state or town agency to come after you, especially if you don’t dispose of the ethanol correctly—in an environmentally safe way that is.
These days, gasoline is either E10 (10% ethanol) or E15 (15% ethanol) and from research on the Internet, most states, but not all, require labeling at the fuel pump, allowing you to choose. The scary thing is that not all states do require labeling—the website Fuel Testers offers up a great chart on states that require labeling and those who don’t.
What’s more, chat with an ASE (automotive service excellence) certified technician and they’ll tell you if your model year requires 10% ethanol and you don’t read the label and use 15%, you will experience engine problems—so be prepared to call a tow truck.
This will be especially tricky in states that don’t require labeling. Model year cars 2001 and older require 10% ethanol levels and those 2002 and newer seek the 15%. Remember those diesel fuel gas pumps where the nozzle won’t fit into a gasoline engine? Those won’t be coming anytime soon so it’s up to the consumer to either read the label (if there is one) or buy an ethanol test kit and test the fuel at home.
You could most likely inquire at the service station on the level of ethanol, but if you’re asking a cashier/clerk, they might not know.
If you’re not a chemistry major or know nothing about eco-friendly ways to get rid of contaminants, stop wondering can I remove ethanol from gasoline. It’s not a safe task to perform. What you can do is start writing your senators and representatives and tell them you’re tired of low fuel efficiency—but fighting with Washington Lobbyists is a tough challenge. So how’s that Chevy Volt looking right about now? It’s electric and you can skip the ethanol but you will have to find someplace to plug-in—or move to California, they have more ways to plug-in than any other state except Alaska, but that's another story that has nothing to do with ethanol.