What are blends of B5 or B20 and pure biodiesel?
B5 is a blend of five percent biodiesel and 95 percent by volume of petroleum diesel. A blend of 20 percent biodiesel with 80 percent by volume petroleum diesel is referred to as B20. Although biodiesel can be used at any mixture, including 100 percent, the B20 mixture is considered the best blend for normal use in conventional diesel engines for its air quality improvements.
