Biodiesel is a wonderful alternative fuel.

The biodiesel industry is in its infancy. Although a tremendous amount of work has been completed by the industry to establish a consistent product standard (ASTM 6751 and now ASTM D 975) there are several things that biodiesel consumers should be aware of related to this quality product to avoid potential problems:

Cost - Although current biodiesel prices are very competitive with petroleum-diesel, historically the price has been higher.

Gels at low temperature - Without additives, biodiesel is less appropriate for use in low temperatures than petrodiesel. ASTM 6751 defines cloud point (the temperature at which waxy crystals form and the biodiesel appears cloudy) and pour point (the temperature below which the biodiesel gels and cannot be poured or easily pumped). Consumers should consider the temperatures in the areas they plan to operate their vehicles.

Lower energy content - Although biodiesel is superior to petrodiesel in relationship to the environment, it is only 90% as energy rich as petrodiesel. Although this does not effect the driving experience, this does factor into the Total Cost of Use (TCU) of biodiesel fro fleet operators.

Solvent properties - Biodiesel is an incredible solvent. It is important that consumers transitioning from petroleum diesel be prepared to change any hoses and filters that may clog as a result of engine deposit removal. Seals used in the fuel delivery system may also be at risk and should be checked (and replaced if necessary) prior to using biodiesel.