On June 20, 2009, EPA published a “Dear Manufacturer” letter that provides guidance to alternative fuel converters on the following:
- how to use the Verify certification system;
- how to certify conversions for gasoline vehicles to operate on vegetable oil and hydrogen;
- how to convert vehicles originally certified for gasoline to operate on ethanol, E85 or intermediate E85 gasoline blends;
- how to convert HD engines;
- how to establish test groups for the purpose certifying alternative fuel conversion technologies;
- how to convert vehicles that have exceeded their regulatory useful life.
For more details, see CISD-09-14.
