Can we extract the Jatropha oil from seeds and directly used in the vehicle?
• It depends on the engine. If we have a diesel engine with a precombustion chamber, we can use the oil directly (after good filtering). If we have a modern diesel engine with direct injection, we have to modify the engine. The best is, to start the engine with diesel, then switch to plant oil (when the engine is hot), and to stop the engine by using diesel again for some few minutes.