The idea to use straight vegetable oil as fuel for diesel engines is as old as the diesel engine itself. Given that the electricity and fuel prices are rising and in terms of environmental protection as well as the diet of the global population the opportunity arises to increase the use of alternative fuel which is environmentally friendly such as straight vegetable oil either new or used.
All biofuels (e.g. vegetable oils) are CO2-neutral and free of sulfur and pollutants in their pure, untreated state.