Taken from the 2014 Ram Pickup brochure:
THE INDUSTRY'S ONLY LIGHT-DUTY DIESEL
EXCLUSIVELY FROM THE RAM BRAND+
Efficiency
The innovative Ram 3.0L EcoDiesel V6 engine began with a block of compacted graphite iron and aluminum twin-cam heads. Then we added advanced clean diesel technology and B20 biodiesel capability. The result? The industry’s only light-duty diesel engine+ and the best fuel economy of any full-size pickup+.
MORE MILES PER GALLON
The best fuel economy of any full-size pickup
Some misnomers about Biodiesel are explained here:
http://www.afdc.energy.gov/uploads/publication/biodiesel_basics.pdf
THE INDUSTRY'S ONLY LIGHT-DUTY DIESEL
EXCLUSIVELY FROM THE RAM BRAND+



Efficiency
The innovative Ram 3.0L EcoDiesel V6 engine began with a block of compacted graphite iron and aluminum twin-cam heads. Then we added advanced clean diesel technology and B20 biodiesel capability. The result? The industry’s only light-duty diesel engine+ and the best fuel economy of any full-size pickup+.
MORE MILES PER GALLON
The best fuel economy of any full-size pickup
Some misnomers about Biodiesel are explained here:
http://www.afdc.energy.gov/uploads/publication/biodiesel_basics.pdf