Diesel fuel Addetives

down home wrote:
2007 Cat Factory Tech reccomended lubricity additive despite pc bs with ULSD.
Now that they have widespread bio that issues is less but watch out for seals and hoses. biodiesel causes them to swell and degrade in diesels made before biodiesel. Max of 5% bio.
Biocide especially with biodiesel when it is going to be parked for a while and when there is lots of humidity. cheap ins imo. your call.