Not sure I follow that either?? A disperant additive plays a vital role in all diesel oils and will generally keep soot in the range of 0.002 to 0.5 microns in suspension. Detergent additives prevent the build up of sludge and act as an acid neutralizer, keeping soot in the range of 0.5 to 1.5 microns in suspension. The bypass filter keeps particles sizes down in this range so these oil can last a very long time as long as the additives aren't depleted. ONe way to do this is with this device apparently. The other is when you change filters periodically, you also add back fresh oil.
If an oil didn't have these additives, you'd have a mess very quickly. The video I saw of an engine with 490,000 miles on an oil change with amsoil was cleaner than my toilet....oh, I guess that could also be bad, but I swear it's not

 

We tested oils in our lab at a place I used to work, some of you guys may know where from the other forums, I won't say it here. Anyways, it was a Tier I OEM supplier, and we had a high performance engine parts aftermarket division, which got sold about the same time I got laid off. They tested nearly every oil, in every situation, in almost every type of engine (Rotary engines included), and while the full synthetics (including Amsoil) performed great in gas motors, and almost never lose their additives package, they didn't hold soot well enough to get it to the filter in the high hp diesel engines running hot. I don't know why, it wasn't my division. I worked on hard parts, not in the engine division. All I know is what the one lab technician told me, and that he switched back to Rotella after seeing the results first hand, and he advised me to do the same. The guys more than trustworthy in my eyes, but I'm not saying he's the say all, end all for engine oils. I haven't run Amsoil, and probably never will, not because of this guys claim...its just to expensive for what you get IMO. Engines have run millions of miles on dino, why fix what isn't broken?

 

Well I do UOA on my oil so I know that the Amsoil diesel oil I use holds up very well in my engine and it has not let me down. So until my UOA report tells me other wise I will keep using what works for me and many other diesel engine owners.