Hey guys, I'm currently doing a study on B20 for my seminar class in college. We are making the bio-diesel at our college and running it in a TM175 NH Tractor and LS170 Skidsteer. The blend is B20 from our own soybean oil press, we are having troubles with the skid loader under load running poorly when the temp has dropped below 20*F. What are the effects of running B20 at these temps through a paper filter? Any help or knowledge you can give me would be greatly appreciated, thank you in advance Michael.