"With all due respect, there is factual data to back the complaints about ethanol.
I work in the aerospace industry. E10 is NOT approved for use in aircraft. Period. Some folks do it under ideal conditions and get away with it, but they are taking their chances with engine-out situations.
In aircraft, ethanol-blended fuels are known to cause problems with:
--Carburetor icing
--Damage to fuel injection pumps
--Water in the fuel tanks
--Frozen fuel lines
--Aluminum tank corrosion
--Degradation of rubber lines, seals, and fittings (particularly on older airplanes... remember, a GA airplane has a useful life of several decades)
The only guys I know that ever risk flying E-10 are in newer aircraft with Rotax engines, these are sunny-Sunday fliers, they NEVER leave the aircraft parked out in the rain, and they do it knowing that they are violating the airframe and Rotax warnings.
In the Ferrari world, ethanol-blended fuels are causing massive headaches with corrosion inside their aluminum fuel tanks, and in the old aluminum Bosch CIS fuel distributors.
Ethanol-blended fuel killed the CIS fuel distributor in my '86 GTI. That car had zero fuel system problems until the mandated switch from MTBE to ethanol for oxygenation.
This is not a wild goose chase. It's chemistry.
Are the effects on the GC's nylon tanks debatable? Sure. We don't have a double-blind study with lots of samples to go on. We have a few riders who profess to have "no problems" and a few riders who have documented problems. But just because we do not have a conclusive study one way or another is not a reason to call it a wild goose chase. We have incomplete information (which the corn lobby actively works to keep incomplete), but there is still evidence from multiple sources to implicate material compatibility problems with ethanol-blended fuels.
Respectfully,
--Dan"