How does Biodiesel perform in cold weather?
100% Biodiesel (B100) will gel at about 30 degrees Fahrenheit or higher, depending on the type of oil it was made from. Please note that there are no additives that will keep the unreacted free fatty acids which might be in your Biodiesel from gelling. If you are treating Biodiesel with an additive, you could still have problems with gelling due to any unreacted free fatty acids that remain in your fuel.