Below are a few additional resources to help answer your questions about biodiesel, biodiesel certifications, OEM warranties, and general biodiesel news.
Crimson Renewable Energy’s Ultra Low Carbon Biodiesel
US Department of Energy – Biodiesel Handling and Use Guide
Clean Fuels Alliance America’s Vehicle/OEM Database (warranty statements)
California Advanced Biofuels Alliance
BQ-9000 Certification Information
CalEPA Air Resources Board’s Low Carbon Fuel Standard