What is biodiesel
Biodiesel or B100 is a renewable fuel. It produces fewer overall emissions than diesel. It has a much higher cetane and offers superior lubricity over diesel fuel. Biodiesel can be produced from any fat either vegetable or animal.
While your engine is happy to burn straight vegetable oil (SVO) your diesel fuel system was designed to handle petroleum diesel and not straight vegetable oil. Think of biodiesel as a slightly modified vegetable oil that works in your diesel engine without any modifications. The idea behind biodiesel is to modify the vegetable oil and NOT your vehicle.
Let's be clear. No modifications are necessary to use biodiesel. Your fuel system will not know the difference and your engine will run smoother and quieter. Biodiesel will clean out your fuel system due to its fantastic solvent properties so you may need a fuel filter changed during this cleaning process.