B-20+ in MS...

[WHATISBAM]

I'm new to owning a diesel as a personal vehicle.
Have been around them my whole life as far as being in the oilfield industry.
I want the best for my own and wondering if anyone knows of reliable and safe bio-diesel for a 6.4 stroker.
I'm looking for B-20+ quality in South, MS.
I hear it is best for the injectors and carbon deposits when mixed 50:1
and on the plus side it is better for the environment.
I'm also considering Opti-Lube XPD being that its HFRR is <317
But Bio is better as far as HFRR is concerned.
Any advice will be appreciated...
Thanks...