Two types of additive. Demulsifier and an emulsifier.One separates the water and your water filter takes it out. The other emulsifies the water and it goes thru your injectors. This is what a diesel mechanic told me so I may be really out in the sticks here. Chevy recommends the demusilfier and I use the StanadyneTop Performance in my 2019 Duramax .No trouble yet at 15K.
When I had my 98 Cummins, Power Service which is an emulsifier, I believe, was recommended.I never had any injector problems,but went thru 3 injector pumps
