Is there any harm in mixing bio diesel and reg diesel during the course of a trip? Fuel stops I've looked at, a couple say they sell bio diesel whereas at home we have reg diesel.
My 2012 F350 6.7 has a decal on the lower front corner of the front doors stating 6.7 Power Stroke / Turbo Diesel B20, meaning up to 20% biodiesel is ok. I think all local stations sell 5%.