Not bad!
As long as you use additives you will be fineI was concerned because my brother (heavy equipment mechanic) has seen some pumps go bad and coincidentally many were on biodiesel. I’ve been putting some Amsoil treatment in each tank as well.
It's not the lubrication that I found lacking but the power which is where the additive helped.Biodiesel is safe in all diesel engines, will also lubricate the fuel system better than any additive.
Just don't store it for 6+ months without a great water separator system because it attracts water more than petroleum diesel.
Yeah they used to specify.The pumps that have bio in IL, IA, KS all were tagged 5-20% with no distinction on exact amount. I added cetane boost and conditioner to every tank.