Vegetable Oil for Diesel?

Want to run your car ‘cheap as chips’? The Top Gear team find out how you can!

Vegetable oil is an alternative fuel for diesel engines and for heating oil burners.

For engines designed to burn #2 diesel fuel, the viscosity of vegetable oil must be lowered to allow for proper atomization of the fuel, otherwise incomplete combustion and carbon build up will ultimately damage the engine.

Many enthusiasts refer to vegetable oil used as fuel as waste vegetable oil (WVO) if it is oil that was discarded from a restaurant or straight vegetable oil (SVO) or pure plant oil (PPO) to distinguish it from biodiesel.