Present day Ultra-Low Sulfur Diesel (ULSD) has 3 common problems
1. Low lubricity
2. Gelling at low temps
3. Absorbs moisture from the air
Lubricity was lost when the sulfur content was reduced, some fuel pumps are more sensitive than others. The Bosch on VW's tended to scar and self destruct. If your pump needs more lubrication, use an additive.
Gelling is the nature of diesel at low temp. Easy solution is to not use when its cold out
Easily done in Mississippi, not as easy in Vermont. Common additive was an addition of kerosene, basically a "lighter weight" diesel.
Absorbing moisture from the air can cause microbial contamination (algae). This can be minimized by keeping your tanks full, no room for "wet air". Addition of a biocide is also a remedy.
A decent additive will attack all 3 problems.