"While the units are in use system-wide, UP said it will start testing in the second quarter with B20 biodiesel and R55 renewable diesel on..." (Luczak, 2022)
References:
Luczak, Marybeth. (2022, March 9th). For UP, Higher Biodiesel Blends. Retrieved from Railway Age: https://www.railwayage.com/mechanical/locomotives/for-up-higher-biodiesel-blends/
Published on March 10, 2022