[Gene1949]

Very informative replies, thank you gentlemen. However, they don’t address the basic question. The toxicity (just handling those chemicals) is well known, hence the regulation and pricing. Increasing the amount used to achieve the anti-detonation characteristics of fuel destroys (I think) the old style pre-ethanol carb and fuel pump kits. We also know what using ethanol fuel does to the pre-ethanol carbs, pumps and hosing

My belief the “true believers” having so much trouble with their fuel systems is because they refuse to upgrade to 30R7 hosing and buying rebuild kits (fuel pumps and carbs) that are ethanol compliant.

How I know; when I bought the 49 40 years ago drove it home and ran great. Soon thereafter I started having fuel issues. Crap in the carb and a destroyed fuel pump. After a skull session with the local parts guy, he put me onto the idea my entire fuel system needed an upgrade to ethanol compliant kits and cleaning out the fuel tank. Problems solved and been running whatever came out of the local gas pumps since.

My story and I'm sticking to it