Quote:
Originally Posted by Piotrsko
Castor oil mixes but doesn't burn (at least in rotary radial engines, hence the scarves favored by the pilots) so it might affect the catalytic converter
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Are you sure it doesn't burn? At least the ones meant for kart-racing used to be prefered by DKW-Vemag car owners, as its more accurate mix to the gasoline in Brazil due to its high ethanol content leads to a more complete burn. Maybe in a Diesel engine it's a whole different issue, even though it might work better with biodiesel due to the alcohol which replaces the glycerin.