the engine is set up for E85, and I am talking about 4 strokes as I do not know about the lubrocation issue, it can make more
power- still will use more fuel though. The problem is vehicles that are designed to use both. Alcohol has less BTUs per pound, but it takes less air to combust the alcohol meaning you can jet the engine a whole lot richer and still fully combust the mixer. Because of the ability to jet so much richer, you can burn more fuel per stroke and make more power.