U.S. automaker Ford announces that its new 2011 F-Series Super Duty (R) diesel pickups will be fully compatible with a 20% biodiesel blend.

The National Biodiesel Board (NBB) explains that it and the National Renewable Energy Laboratory have spent more than $10 million testing B20 and understanding how it works in new diesel engines and after-treatment technology during the last five years. That's in addition to similar efforts by original equipment manufacturers (OEMs) like Ford.

According to NBB, blends of B20 or higher are now accepted by more than 18 OEMs.