ASTM Approves New Biodiesel Blend Specifications

A vote by the ASTM International’s D02 Main Committee has approved a trio of ASTM specifications for biodiesel blends. ASTM has voted to approve three sets of biodiesel specifications that should significantly bolster automaker support and consumer demand for biodiesel.

Automakers and engine manufacturers have been requesting a finished blend specification for B20 biodiesel blends for several years, with some citing the need for that spec as the single greatest hurdle preventing their full-scale acceptance of B20 use in their diesel vehicles. The approval of ASTM specifications for inclusion of up to 5% biodiesel (B5) in the regular diesel fuel pool also means that biodiesel could soon become more readily available at retail fueling stations nationwide.

The three changes are as follows:

-Changes to the existing B100 biodiesel blend stock specification (ASTM D6751)

-Finished specifications to include up to 5% biodiesel (B5) in the conventional petrodiesel specification (ASTM D975)

-A new specification for blends of between 6 percent biodiesel (B6) to 20 percent biodiesel (B20) for on and off road diesel.

“The new ASTM specifications for B6-B20 blends will aid engine manufacturers in their engine design and testing processes to optimize the performance of vehicles running on biodiesel. The new specifications will also help ensure that only the highest quality biodiesel blends are made available to consumers at the retail pump,” said Steve Howell, chairman of the ASTM Biodiesel Task Force.


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