The project A. Determine whether vegetable oils can be alternative fuels for diesel burning vehicles. The best vegetable oil can depend on many factors such as cost, appearance, calorific value, viscosity, stability, ease of burning, smell, or not being used for another purposes. Best' is thus very difficult to define. The manner in which 'best' is interpreted is left for you to determine. The use of vegetable oils is viable if vegetable oils are easily obtained, are cheap and are usable in a diesel engine directly, or with simple or cheap modifications - modifications to the diesel engine itself, or the conversion of vegetable oils to products usable in diesel engines directly.
Vegetable oils are a source of food for both humans and animals.
To use vegetable oils for fuel, land needs to be set aside for this purpose. This land is thus not available for growing foodstuffs. If land is plentiful, setting aside some land is not a problem, but when the land needed to generate fuel is at a premium, it becomes a question of ethics. Below you will find additional notes and procedures that should aid you in undertaking your project and in making your decisions. Another property of vegetable oils is that they are more viscous than water.