Why does Tornado uses a blend of ricinus and synthetic oils?

To answer this question we need to get into more detail about both types of oils:

Ricinus is a natural oil, withdrawn from the Castor bean. It’s a colourless, sometimes yellowish oil.
Ricinus oil has got some very unique properties which make it extremely suitable for modelling engines.  First, it has superb lubrication qualities. Second, once the oil gets very hot, instead of degrading it starts polymerising; the oil changes into a more solid lubricating film which will lubricate the engine even at very high temperatures.

The big advantage of synthetic oils is that they carbonite very little resulting in less engine deposits. It even has a ‘cleansing’ effect on the engine. Synthetic oils are also more low-viscous than Ricinus oil and maintain this quality at a high temperature.

So, because there are strengths and weaknesses of both castor and synthetic oils Tornado fuel uses the strengths of both types of oils containing a blend of both ricinus and synthetic oils. 

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