This document discusses the benefits of biodiesel fuel. It provides 10 key reasons why customers are using biodiesel, including that it is categorized as an advanced biofuel under the Renewable Fuel Standard, has significantly lower carbon emissions than petroleum diesel, has a high energy balance returning over 5 units of energy for every 1 unit used to produce it, and supports sustainability and energy security by providing a domestic fuel source. The document is intended to educate technicians and customers on the technical and environmental benefits of biodiesel.