Well, another summer and winter gone by, and more to report.
I found out last summer that Klotz Super Techniplate will in fact mix well with E85, and stay mixed. I used that interchangeably with Benol last summer. It smokes far less than the Benol too, without completely eliminating the characteristic smell.
I also found out what was making the noise with the older Lawn Boy. It turns out that particular mower was designed for 16:1 fuel to oil mix. I was giving it far less. When I mixed the oil to what the motor required, there was no noise at all. So it would look like you need to mix according to the manufacturer requirements, even after E85 conversion.
Anyway, the 22" mower, after having mixed E85 in the tank, and being outside all winter, fired up on the second pull this spring. ;D
All E85 powered yard equipment is a go for another year. Take that ethanol haters!
“People who say it cannot be done should not interrupt those who are doing it.” - George Bernard Shaw