Ethanol in gasoline is a waste of money but the "Corn Lobbyists" are lining the Senate and Congress pockets to dump it on U.S. (us/we). Ethanol has an affinity for moisture and will draw it into your tank out of the air. Ethanol @10% will cost you 10% to 20% fuel economy loss. Ever seen the metal filler neck all corroded in a car/truck?
My '93 GasGas JT250 had a prisitne tank all it's life when I was using a 50/50 mix of 110 LEADED purple (Sunoco) or C12 VP LEADED and 93 octane pump gas. used the same stuff in my '74 TY250. No problems for years until about a year and a half ago I made the mistake of switching to Sunoco 100 clear race fuel with same pump gas. Didn't notice it right away but my fuel tank "grew" in all directions until it will no longer sit down on the frame. The new Yamaha OEM fuel cap had to be relieved and greased the threads (silicone grease)to be able to tighten it down. I had a hard time unscrewing it the first time since last year. The cap had swollen so tight I almost had to use pliers but I managed without that.
Funny thing is the original Yamaha cap had actually shrunken until it was a straight drop in and will not thread at all. I obtained a NOS cap and it worked perfect until the ethanol race fuel. Maybe I'll soak it in ethanol/gas to see if it will grow!!!! Say What? NO No I ain't goin' there!
Here in Arkansas we do have ethanol free mid and Premium grade gasoline. I have read there is even ethanol free regular 87 octane. I will use that in my car and truck etc. but only premium pump and 110 Sunoco or VP C12 (anything in that range that is ethanol free. Damn I hate the stinkin' government supidity.
Hi Curtis! Jon here.
As I mentioned in a previous post, I've not had research experience with Ethanol, but from personal experience, Methanol race fuel systems require a complete flush before any storage due to corrosion caused by any alcohol left in the system, so I wouldn't be surprized if the Ethanol is causing some component problems.
When I lived in Northern California, we also had a big problem with another oxygenation compound, MTBE (Methyl Tertiary Butyl Ether) that contaminated the lakes and watersheds due to watercraft exhaust. If you were filling your tank and some of the MTBE vapor managed to sneak past all the anti-vapor attachments on the pumps required in California, the stuff would just about knock your socks off. My understanding was that it was used because it was cheaper than Ethanol and it that was true, yet another example of profit before responsibility.
All the stations here in the Midwest proudly display large signs if they carry Ethanol free fuels, so it is apparent that the public has an affinity for avoiding the oxygenated fuels. As such, it puzzles me that the best and brightest minds in the U.S. Chemical Engineering industry can't come up with an emission reducing compound that solves the problems and the public wants.