Biodiesel Fuel -Biodiesel is made from vegetable oil, cooking oil, animal fats, and other sources. It is typically blended with petroleum diesel and the percentage of biodiesel is signified in the name given to the blend. For example, B20 is 20 percent biodiesel and 80 percent petroleum diesel. B20 is the most common blend. It offers good cold-weather performance, and an energy output per gallon that’s often indistinguishable from gasoline. B100 is pure biodiesel it produces about 8 percent less energy per gallon than petroleum diesel, so the B20 blend – which has 80 percent petroleum diesel – has very little reduction in energy. Biodiesel fuel is used to power light duty and heavy duty vehicles.
Compressed/Liquefied Natural Gas (CNG/LNG) -Two types of natural gas can be used to power vehicles. The first is compressed natural gas (CNG) and the other is liquefied natural gas (LNG).
Compressed natural gas is created when natural gas is compressed to less than 1 percent of its original volume at standard atmospheric pressure. It’s stored in pressurized tanks and can power light and heavy duty vehicles and it offers similar fuel efficiency, power, and acceleration as regular gasoline.
Liquefied natural gas is created by purifying natural gas and then cooling it to -260 degrees Fahrenheit so that it turns into a liquid. The need to keep it cold and stored in vacuum-insulated pressure containers limits some of its utility. It’s most often used for medium- or heavy-duty vehicles.