Can you use biodiesel in a car?

Biodiesel can indeed be used in cars, albeit with certain considerations. Pure biodiesel (B100) can be used in diesel engines, but it's more common to blend biodiesel with conventional diesel to create biodiesel blends such as B20 (20% biodiesel, 80% diesel) or B5 (5% biodiesel, 95% diesel).

Using biodiesel in a car might require some adjustments or compatibility checks. Older diesel engines may need modifications to accommodate biodiesel's different properties and lubricity characteristics. However, modern diesel vehicles are generally compatible with biodiesel blends up to a certain percentage, as specified by the manufacturer. Always refer to your car's owner manual or consult with an expert before using biodiesel to ensure compatibility and avoid any potential issues.