The disadvantages of biodiesel include a decrease in horsepower and a large amount of land devoted to growing the crops to create the fuel. Another disadvantage includes the fact that the fuel gels in cold weather.
It cost more than regular fuel.
it is more expensive
its renewable
Because its disadvantages far outweigh its advantages. ULSD motors require expensive conversions to run on biodiesel (contrary to what seems to be popular belief, you don't just pump biodiesel into any ULSD motor without conversion), and it doesn't perform as well as ULSD #2 does.
Biofuel is organic, cheap, good for the environmet, and made from plants grown here in the US. Biodiesel is recycled oil that can be used to run cars and plains but it is not organic and the reproduction is not good for the environment at all and can be a bit more expensive. All in all they both have their advantages and disadvantages.
Biodiesel
biodiesel = el biodiésel
doesn't work well in cold temperatures BIODIESEL ADVANTAGES: Biodiesel is an alternative fuel to standard fossil fuels that can be made from fats and vegetable oils. It contains no petroleum or petroleum-products. If made correctly, it can be used in diesel engines with few or no modifications. DISADVANTAGES The main issue is producing biodiesel in a sustainable way. This means an emphasis on agricultural practices that do not use rainforests. Some Biofuels are more harmful than others. Rapeseed may produce more CO2 than fossil
Yes it is safe to mix petroleum diesel and biodiesel. Blends of biodiesel and petroleum diesel are designated "BX." Where "B" states that the fuel mixture is a biodiesel blend and "X" indicates the percentage of biodiesel in the blend. For example, common blends of biodiesel in North America include B2 (2% biodiesel), B5(5%), B20(20%), and B100(100%). B100 is also know as "neat," or pure, biodiesel.
Wikipedia provides an excellent encyclopedia style article on biodiesel fuel. Other websites that offer information about biodiesel fuel are the U.S. Department of Energy's Biodiesel page and the National Biodiesel Board's page.
Yes, you can buy a hybrid that uses biodiesel but they are much harder to come by than hybrids that don't use biodiesel or biodiesel cars that aren't hybrids.
the biodiesel should be used in the diesel engine, and there are some biodiesel motorbike has been produced such BWM http://www.doinggroup.com/