For those pinned to ethanol the answer is easy. For those of us not pinned to ethanol I just dont see answers listed here that answer the question of ethanols stripping ability(which no product stabilizes) vs predetonation issues and temp issues with higher octanes. My understanding from industry sources and mechanics is to avoid ethanol at all costs because of its solvent issues not water issues or phase separation issues.C.O.D. Jr. III