When Ethanol blends first arrived here, I started seeing OPE with something that looked like mold growing in and on it.
1st image was a carb off of my string trimmer.
Look lower left of frame. Notice the Impulse hole.
Carburetor had that fine "scaffolding" of something growing all through it.
Next two images are from a neighbors trimmer that had quit running.
I've seen a bunch of carburetors that look about like that, after exposure to the Ethanol blended fuel in my region.
There's something awful nasty in the blend here.
I also had several of those red plastic Blitz brand fuel jugs that all slowly turned black with some sort of mildew looking mess spreading across them.
Water blasted and bleached them but it kept regrowing.
Almost like a remake of The Andromeda Strain or something...
I finally found E-free fuel in the next county (oh yeah, it's worth the trip) and got some new fuel jugs.
No more weird fungal growth after that.
That's why I won't let Ethanol blend fuel near my things anymore.
We seem to get a different blend here, even if it's non Ethanol blend.
It even smells different.
My neighbor won't drive to the next county for his (E-free) fuel and he still has some fuel system troubles even though we've done the water and shake, saturation test, for ethanol.
Whereas I'm still going to the next county for my fuel and I'm not having problems. ...yet...