One of my neighbours down the road 6 houses down swears by Howes he uses it in his truck etc. I have some here at home I use once in awhile but I have been using this stuff called Diesel Power + all I can say is holy shiat it makes the old IDI run good. Its like adding NOS to a gasser engine I guess the cetane boost helps.
The biggest pain in the *** about adding fuel additives is carrying a funnel with a flexable bottom half. With a flatdeck you have problems getting a straight shot at the filler neck. I already have to drive the drivers side duals up on a 6" thick wood block to get fuel into the truck if I don't it takes forever to get fuel in the tank as the filler hose has very little slope.
I'am not the only one with that problem the guys with E-350 and E-450 cube vans have todo the same. At the only gas station in the area there is a slightly sloped area around the diesel pump and gas pump so its a fight to see who gets there first when it comes to anybody with a flatdeck or E series cube van
If you position right the truck is on a angle so the fuel will go in better.