Not sure how you managed to put magic in a bottle, but this worked wonders for me. My 2007.5 Silverado 2500HD (Duramax LMM) with 180K+ miles was going into regen every 200 miles or so and thus oil changes were DIC suggested at about 2000 miles. Based on reviews I bought a bottle of AR6400-D during a recent sale ; no harm in trying, right? Used the recommended dosage and the soot level immediately started decreasing (I monitor many parameters using and Edge CTS2). Went through a regen during this treatment and saw the soot level go to 0 and stay there for quite a while. Regens are now up to 350-400 miles and oil change recommendation at almost double the previous interval. Cannot give hard data, but my turbo seems to spool quicker now. And like others, my fuel economy has increased measurably. My injector balance numbers were very good before using this and of course remain so. I will be using this at every oil change.