Whether you already use a biodiesel blend in your fleet or are looking into it, you may have concerns about how this alternative fuel, produced from vegetable oils (such as soybeans) or animal fats and “blended” up to a certain percentage with regular diesel, will interact with the new 2010-emissions diesel engines.
Does biodiesel present unique challenges to the latest aftertreatment technologies developed for these engines? Does this alt-fuel negatively affect fuel economy? What do engine manufacturers say? Overall, does the EPA 2010 mandate really make a difference in biodiesel use, compared to the previous standard?
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(The success of the biodiesel fuel industry relies heavily on biodiesel testing <http://www.youtube.com/watch?v=s32Ke2VzrqU>, not only at the production level but at the consumer level, where degraded fuel may cause engine failures.  Of major concern to diesel and biodiesel users is the very real possibility that water has contaminated their fuel. (See http://www.youtube.com/watch?v=0YcczdvPyAk).  The potential catastrophic impact of this problem is discussed at length  in this video at: http://www.youtube.com/watch?v=-lh4qhXc_5s&feature=youtube_gdata.
Fleet Fuel's  family of inexpensive biodiesel test kits  is just a click away on the internet at:
<http://fleetbiodiesel.com/biodiesel_testing_and_supplies.html>)