Our E15 is blended @ our suppliers tank farm site. I'd assume if they're selling us E15, that's what it is. They'll also blend from the truck to your tank if they happen to have a load like that.

Is our B11 not B11 either?

I'm not real sure what your problem is out there w/E15, I'm saying it works here & has for the 30 yrs we've been using it. It's the only gasoline we have on the farm, besides the 114 octane we use in the pulling tractor. If you're suggesting we're not getting E15, then what blend are we getting that's not causing trouble? Tell me, then request your co-op to blend it for you. I think what you've basically said is that your dealer is cheating you & you'd like him to confess & fix the problem.