No, I don't run the blower dry each time.
As noted, been running this stuff in various concentrations for decades. Lessee, what are all the bad things that happened...
I had to replace a clear plastic line on an old McCollough to get it going... I don't have the history of the thing though, maybe it was run on E0 it's whole life and the line went bad just from age? Dunno.
I filled the V-Max with straight E-85 once. It didn't like it; had to ride the rest of the way with the choke slightly closed. I generally don't run higher than E10 in carb'd stuff, but I have run a strong blend through a carb'd '76 Chevy pickup and it ran just fine. I wouldn't be surprised, though, if I have to replace hardened rubber fuel lines at some point. I will experiment with E15 in the carb'd stuff to see how it goes.
I pushed the envelope a little too much in my early days of using straight E85... had a tank full of it when it got brutally cold- like today (-26F)
- and that car would not start. Yeah, don't use it in the cold.
But this is about WRECKING stuff. I've never replaced a fuel filter or an injector or anything except that McCullough line and our State has had "gasohol" since the late '70s.