I noticed in the fuel poll the vast majority of responders use 93 octane in their bikes. In my travels around the Phoenix area the highest octane I've seen offered is 91, which I always use. I'm not sure why an engine with only 8.5:1 compression ratio can't run on 87 octane anyhow. (I had a Honda V65 Sabre with 10.5:1 compression that ran just fine on 87.) But where are folks finding the 93 for their Harleys?