I’ve said time and time again, that the air filter isn’t always the cause, but it’s the first thing to eliminate. Along with any other easy things to try like fuel filters. I fully admitted in my initial response that it might be something else causing the issue.
You do realize you’re talking to the guy who, on his own free time, took it upon himself to create a spreadsheet and a public questionnaire regarding the regeneration frequency issue right? In an attempt to gather more data about these failures and issues in the hopes that a trend, and ultimately a fix could be found?
DPF’s themselves rarely fail. 99% of the time, the issue is upstream. Either on the engine, or in the software and monitoring architecture that controls the emissions system. What I can tell you is, more often than not, when a dealership replaces a DPF for P2459, that truck will ultimately end up back at the shop demonstrating the same issues because they weren’t adequately diagnosed and corrected initially. You’re free to do whatever your little heart desires, but I can almost guarantee you that the DPF itself is not the issue at hand with your vehicle.
What I absolutely, unequivocally can guarantee, is that everyone at that dealership was thankful when you walked out the door.
