Diesel fuel additives??

I use the stuff in the grey bottle I get at wally world diesel kleen. Also ford sells an additive they recommend has recently dropped in price. Are they needed, depends on who you talk to. Cant tell if they make that much difference but if you use stuff in your car like techron why would a diesel be any different? Diesels need the lubrication these are supposed to give that the ulsd does not possess. For the oil there is a stuff called archoil that helps with the injectors which ford uses oil pressure to open/close. Rev-X is another but a bit more pricey. My BIL uses it and swears by it, I put rev-x in last oil change have not used archoil. I think the white bottle of DK is also a winter additive if needed I am not sure, as we dont get cold enough here in Az where I am at.