Is cold weather a problem in high percentage blends?
Yes. The B100 will begin to gel around freezing (between 32-36° F) and will clog fuel filters between 22-28° F. Gelled fuel melts when warmed. Fuel rarely gels while the engine is running and circulating fuel through the system. Cold morning startups are generally the only time that gelling becomes an issue. To ensure cold weather operability, we recommend taking precautions whenever temperatures are near freezing. There are three important actions you can take to continue using biodiesel in temperatures below freezing: add heat, add petroleum, or add a winterizing additive. The easiest cold weather solutions seem to be a blend or, if you’d rather not add petro, you could use a cold flow additive.
