Ethanol-enriched fuels (E10 is the most common in the United States) meet or exceed all performance
standards for U.S. vehicles, including:
- Heat Energy: The heat energy of all gasoline-based motor fuel varies somewhat
by formulation, region and time of year.
- Ethanol burns slightly cooler than straight gasoline: on average, a gallon of 10% ethanol-enriched
gasoline contains about 112,000 BTUs of heat energy, compared to 114,000 BTUs for straight gasoline.
- Cooler combustion temperatures contribute to increased engine longevity.
- Volatility/Vapor Pressure: Ethanol-enriched fuel meets all applicable vapor-pressure
- U.S. Environmental Protection Agency (EPA).
- Octane: Adding 10% ethanol to regular unleaded gas typically increases the octane
rating from 87 to 89.5 or higher.
- This boost can reduce knocking and pinging, and allows cars with knock sensors to gain increased power.
- Phase Separation: Ethanol-enriched fuel is far more tolerant of water contamination
than regular gasoline
- Preventing phase separation and water at the bottom of the tank.
Fuel-Systems & Engines Compatability
- The issues of ethanol compatibility raised in the 1970's have long been resolved .
- Since 1980, modern fuel lines have been fully compatible with ethanol.
- Since 1990, all U.S. gasolines have contained detergents to control fuel-tank deposits that can clog
- And when it comes to induction-system components, ethanol blends work well with fuel injection systems
and older carbureted vehicles.
- Because ethanol burns cleaner than regular gasoline, it leaves fewer deposits on intake valves and
- Otherwise, ethanol-enriched gasoline performs in much the same way as regular gasoline.
Because ethanol-enriched gasoline contains more oxygen than
regular gasoline, it burns more completely, which reduces carbon monoxide emissions.
Ethanol is produced in the country where it is being used this
creates local jobs.
Ethanol helps reduce our dependence on foreign energy sources.