In our fleet that only seems to be a Volvo issue. Many of the guys in a Volvo complain of black filters. My Cascadia, same routes, same Loves fuel, same mileage, no black filters at all. But to be fair, we have no other models of truck for better comparison.
I have never used additives, in diesel , gas , or oil.
If your buying decent quality products you should not need extras, there's additive the refinery's already add, for winter or summer the blends are different.