One 1000ml can of Vegiboost, as seen in the photo (log NOT included). Use this product to enable vegetable oil to be blended with petrol and diesel to produce a custom blend. A small amount of petrol significantly reduces the viscosity of vegetable oil and an even smaller amount of vegiboost compensates for the low cetane value of petrol to bring the overall cetane value of the blend back up to acceptable levels.
Vegiboost is a cetane improver and is added at about 0.1 % volume. Just a tiny amount has a large effect. It contains nearly 100% 2-ethyl hexyl nitrate which aids detonation inside the engine combustion chamber, enabling vegetable oil to be used more readily in a diesel engine.