aronol bio-blend 20 is a high performance multi functional diesel fuel conditioner. Improves stability and performance of all Bio diesel blended fuels.aronol bio-blend 20 is a very effective fuel treatment to improve cold weather operability of bio fuel blends of up to 20% bio-diesel with 80% conventional diesel. aronol bio-blend 20 Contains a powerful detergent to clean fuel injectors, improve fuel spray pattern and maintain precise fuel metering and automization. aronol bio-blend 20 Incorporates a polymer to modify parraffin crystals and a co-polymer designed specifically to alter methyl esther crystals. aronol bio-blend 20 Contains advanced jet fuel deicers to address moisture issues and prevent fuel line freeze up. aronol bio-blend 20 Incorporates a fuel stabilizer specifically designed to prevent vegetable oil derived renewable fuels from oxidizing and degrading over time.