: It can be transported through existing oil pipelines and used in higher concentrations in standard car engines without requiring significant modifications to the fuel delivery system.
: It has a lower vapor pressure than ethanol, which helps reduce evaporative emissions and smog formation. What Is N-Butanol - Butunol Uses - Industrial Chemicals
: Butanol contains nearly 30% more energy than ethanol, making it much closer to the energy density of standard gasoline.