Going to switch all my vehicles to run on biodiesel. Does castor-based biodiesel worth or should I blend it with other varieties such as palm biodiesel?

Castor oil is reported to be quite thick in comparison with other oils, but has some recognized lube properties in 2-stroke spark ignited engines. But using the pure oil as fuel is supposed to not damage the engine. It's just a trouble when there are rubber parts on the fuel lines.

Feel free to question