Engine manufacturer Cummins has approved the use of 20 percent biodiesel in many of its engines built in 2002 or later. The company said B20 can be used with trucks, motor homes, school buses, emergency vehicles, buses and shuttles.
Previously Cummins had only approved up to 5 percent biodiesel in its engines. Biodiesel is being touted because it reduces emissions and dependence on foreign oil.
However, there still is no testing standard for B20, a stumbling block in getting widespread distribution of the fuel. The American Society of Testing Materials (ASTM) has been developing a specification for some time, and once it is finalized, more engine and vehicle manufacturers as well as fuel distributors are likely to get on board.
