what percent of biodiesel can be used in 2019 @2018 pickups
Your owners manual will say and it probably says on the fuel filler cap. Per Cummins the following engines can use B20. On Highway: ISX, ISM, ISL, ISV5.0 and ISB engines built after January 2007. ISX CM570 built after January 2002.
The ISB engine is used in the Rams.