Diesel Biocide Source

[BATTY54]

Startron for diesel worked well for me. Had to change out my fuel filter though, was nearly full with slimy gunk.
CAP auto parts stores sells it local, 8oz. bottle treats 128 gallons about $10 a few years ago when I got mine.

Star Tron Enzyme Fuel Treatment - Star Tron Diesel Additive

 

[Soundguy]

napa and carquest sell power service biocide...

 

[Orange 08]

I bought some Lucas brand. Lots of places cary Lucas maybe one will handle this also.