Originally Posted by cp2146
I have a theory I want to run by everyone to see if it makes sense. Feel free to tell me if I have lost my mind. Since I bought my truck in late October of 2011, I have been through several regens. Granted, some of them were probably because the previous one was not allowed to complete so it had to try again. I get that. However, I had never really noticed any performance difference other than lower fuel mileage and a different sound from under the hood during any of the cycles. I also mentioned in another thread (see Liar, liar) that my truck had never thrown any smoke during regen...until the last one. But since the last one, my performance seems to have improved, including fuel mileage. It even sounds different under the hood. Here's my theory/question. Is it possible that most if not all of the previous regens were not completely cleaning the DPF, therefore keeping the filter partially restricted? Then on the last one, when it finally blew smoke, it finally cleaned the filter properly and removed the restriction. Can that be possible or is it just wishful thinking and I'm imagining improved overall performance?
i dont know so i cant answer your question, but this reminds me of something that i think about all of the time! I really want to see first hand the experimental results of effectiveness of the dpf. I have a hard time believing that emmissions are reduced enough (just because we cant see it) to make up for the pollution that comes along with less fuel efficiency from the regens. What i am saying is that in a small but large way (when you think of the mpgs lost among all dpf equipped trucks combined) we are becoming more dependent on more fuel!
Laws of thermodynamics state that energy is neither created or destroyed. So i believe that instead of our trucks "polluting" individually, it is just adding to the pollution of those who acquire the oil (oil companies). So we are just shifting the hydrocarbon pollution to another source.
This system was so new and abandoned so quickly that i have to assume that it is not as effective as they thought. There is a trend with these trucks from my own experience and from what i read on this forum. Everyone early on experiences no white/blue smoke during there first how ever many regens...then it starts to happen. I would imagine this system was tested and approved off of results from this time period of no white/blue smoke. I would love to see how harmful the particulates are that are being blasted out with the white/blue smoke...maybe im crazy but this has been on my mind