New regulations have provided for almost zero sulfur dioxide content in biodiesels. Biodiesel is better for the environment because it is made from renewable resources and has lower emissions compared to petroleum diesel.
Producing biodiesel from animal fats may not be feasible enough to replace petrodiesel just yet because of its limited supply. The conversion to more biofuel is probably inevitable. In colder climates, biodiesel tends to lose viscosity, particularly at higher blend levels.
And conversion kits are readily available for older diesel engines. There are kits available to convert diesel engines that have problems with burning biodiesel. The main problem with bio-fuels today is the source of the raw materials.
There is still a lot of work ahead of us to truly replace the fossil fuels with bio fuel. With better gas mileage, lower emissions, and the use of renewable, domestic sources, the upsides actually make biofuel cars a greener option than even hybrids.
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