[OldSchool_IsCool]

Just shove a breathalyzer into the nozzle and tell the pump to blow!!

Michigan has been E10 for a long time. Bikes, cars, trucks, power equipment, motor boats, I've not had an issue. But will have to pay attention once E15 makes it here.

 

[OldSchool_IsCool]

I think the hard part about at-pump testing is the flow rate of the pump. Even at the first click, it's way too much gas and way too fast for a pee strip or a collection bottle. And if you are concerned enough about the ethanol content to bother with a test kit, you would certainly bother to read the pump signage. So then it come down to trusting the station and/or the State department of ag or dept of trans.