Weather outlook is warm to cool. You can run B100 for the foreseeable future. It's February to you we're expecting one more cold snap.
Winter Rules are in Effect - To keep biodiesel from freezing just blend in some diesel when temps drop below 50F.
Rule of thumb is to run B80 during the winter months when temps are down to 40F.
Run B50 if the temps drop into the 30's.
Run B30 below freezing.
Houston Biodiesel accepts used cooking oil for responsible disposal at any time during the year.