from a course on marketing of biodiesel B100:
"Problems with B100 include material compatibility with seals,
gaskets, and other fuel system components, cold weather freezing, storage stability, and
NOx emissions exceeding CI engine certification levels. B100’s technical problems (other
than NOx emissions) can be minimized by retrofitting fuel system components, adding fuel
system heaters, and using storage stability additives and biocides if necessary"