Brussels, Belgium – Global automakers and engine producers have developed recommendations for ethanol and biodiesel when blended with gasoline and diesel fuel. Fuel quality experts from Europe, the U.S. and Japan joined to produce the new Biofuel Guidelines.

The guidelines apply to pure ethanol (E100) blended with gasoline at levels up to 10 per cent by volume, and to pure biodiesel (B100) blended with diesel fuel at levels up to 5 per cent by volume. These are the two most widely-used biofuel blending components available today.

To ensure fuel providers know how to maintain good biofuel quality from production to retail sale, the guidelines provide information about test methods and management practices. They are based on the manufacturers’ global experience and expertise, and since these change over time, the guidelines will be periodically updated.

The guidelines are intended to be used in conjunction with the Worldwide Fuel Charter (WWFC), which recommends quality specifications for finished gasoline and diesel fuel delivered to consumers around the world. Automakers and engine manufacturers created the WWFC in 1998 to promote greater understanding of fuel quality’s effect on engine and vehicle emissions and performance, and help promote global fuel harmonization in accordance with engine and vehicle needs in different markets.

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