This one has been beat to death on the internet by others that claim to be experts. Whatever you may think about Project Farm I do like his video on diesel additives.
On the farm I run 12,000-15,000gal of diesel through everything from lawnmowers and skid loaders to 900hp forage harvesters and everything in between. I have numerous machines with over 20,000hrs and have never run an additive of any kind through most of them. No1 fuel in the winter when it’s cold and straight No2 all other times. I used to run Howes in stuff in the winter but had an injection pump rebuilt on a skid loader and the guy asked if I was using an additive as he saw certain parts more worn than normal.
Fresh fuel filters and the correct winter blend and you’ll never have issues.