Off-topic question. Did you have to advance your ignition timing when you started running E0? I've thought about using it in my Datsun, especially with E15 rolling out now. I've got a 1980 280ZX, modded with flat top pistons mated w/ a p79 head for about 10:1 compression. Currently though, with normal E10 92 octane gas, I have the distributor set to maximum advance and even with that I feel like it's not getting peak performance. In theory I should already be running lower octane for more advance, but I don't b/c I worry about detonation, and my understanding is that E0 is also more prone to detonation than the same octane ethanol blend b/c it runs hotter without the evaporative cooling of the ethanol, so I might even need to back off the advance when really I'd like to increase it. Did you find running E0 retarded the timing and/or led to any performance changes?
I’ve run some modded engines (including higher than stock compression) and for street usage, I’d be worried about the variability of gas you get over the years. You’re eventually going to get some crap gas on a hot day and have a bad day if you’re right on the ragged edge (especially without knock sensing).
For track or drag usage, running on the ragged edge makes more sense.
I use it for small engines and my motorcycle for the most part. The place by me is all boats, performance cars, snowmobiles, and people with 7 Jerry cans.