Now that Linear Logic has provided new x-gauge commands for my Scangauge II, I'm able to see the soot load percentage, how many miles since last Regen, and when the engine is in Regen. The Regen happens exactly at 300 miles (I've seen approximately 6 Regens since the Scangauge was updated). It's interesting that the soot load does drop when the Regen is complete and the lowest I've seen was 5% -- but most the time in the 20-30% range (highest I seen after Regen was 45% which was when I was driving slower and in the city). Interesting it doesn't make any difference how low (or high) the soot load shows after the current Regen, the soot load percentage creeps up to 100% which is "exactly" at 300 miles and starts again. 95% of my mileage is highway at 65 to 70mph so not sure if it would be different if I had more city miles. What mileage are you seeing between Regens?