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My civic HX does not like the E85. On two different trips to Nebraska I had issues with it. State of Nebraska subsidizes the ethanol so it's quite a bit cheaper than anything else at the pump. Go figure since they grow so much corn there. First time I put it in on purpose (cause it's cheaper). Second time I didn't pay attention to which pump handle I used and put the higher percentage ethanol in. Both times (a year apart from each other) the mileage dropped from 40 to about 35 and check engine light came on. Switched back to "regular unleaded" and mileage went back to normal. Purged by burning through a couple of tanks of "regular unleaded" and engine light went off. I run the 10% stuff all the time at home with no problems. My Ranger doesn't mind the E85 at all. Eats it right up with no ill effects.
As for small engines, I generally run them dry if they're going to be left in storage for any length of time (ethanol or no). They just have a better track record for starting up in the spring that way. Don't know about cold start 'cause it just don't get that cold where I live.
PS, only us old farts can appreciate the irony of "regular unleaded"
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