2012 Ford 6.7L DEF & Regen Questions

One way to measure soot buildup, regens, etc. is to use the Edge Insight which looks like a programmer (so your dealer won’t like it), but has no capacity to program. It connects to the ODBII port. Data available will vary from one engine to another. I use mine on a Ford 6.7 to measure soot mass, #1 Exhaust temp., #4 Exhaust temp, engine oil temp., & battery voltage. I think that the Ford 6.4 regened on a clock or mileage or something pre-programmed which is one of the reasons that its mileage was so poor. The 6.7 regens normally when soot mass gets up to 2.68 and continues until it gets down to about 1.6. You can watch the temperature on #4 exhaust get up very high during the regen and the soot mass will continue on down to 1.3 until the exhaust cools. It’s also good to be able to watch exhaust and oil temps during heavy towing. When we were on a towing trip out West our soot mass stayed below 1.0 most of the trip just from high engine temps from towing. We had one regen on the second day of the trip at only a soot mass of 1.4. There is something that trips a regen besides soot mass, but the threads I read haven’t figured it out yet, and it is rare.