Virgin Oils, Recycled Oils, and Yellow Grease Biodiesel
The oil and fats used to produce Biodiesel will dictate important properties of the fuel, including:

• Cold Flow- at what temperature the diesel crystallizes
• Energy Content- saturated fats have more energy
• Oxidative Stability- some oils, such as soy, have antioxidants which yield a longer shelf-life.

Each type of oil or grease can be made into excellent quality Biodiesel.

Virgin oil is vegetable oil that is usually grown, crushed, pressed, filtered for the oil and other co-products, such as meal. Many different oil bearing crops are grown around the world.

• Soybean Oil is the most common virgin oil for Biodiesel in the USA. Farmers in the Mid-west can grow use a soybean for oil, animal feed, and other products such as vitamin E.
• Rapeseed Oil is the most common oil for Biodiesel in Europe. Rapeseed oil is also very common in Canada, known as the Canadian variety canola.
• Mustard Seed Oil is an oil with a lot of potential. Mustard seed can be used for oil as well as an organic pesticide from the oil.
• Algae Oil might be the next big thing for Biodiesel. Some algaes are 50% oil!

Recycled Oil is waste restaurant grease or used vegetable oil that is collected and made into Biodiesel. Many restaurants and business currently throw away used oil in the dumpster. Using our waste streams as feedstocks for other products is always a sustainable option.

Many Renderers will collect used oil from restaurants to make Yellow Grease.

Yellow grease is a combination of many things, including used restaurant grease and animal fats from rendered animals. It is a commodity (like oil, diesel, and gasoline) and traded on the open market. Yellow Grease can also be made into high quality Biodiesel.

Other Feedstocks
Brown grease, soapstock, and other low cost, low quality (High Water, High Free Fatty Acid (FFA)) feedstocks can be made into good Biodiesel. Current technology makes such production unattractive financially.