Cummins 6.7L
The inline-six workhorse in Ram heavy duties. Guides below.
Guides
6.7 Cummins Reliability — What Breaks and What Does Not
Fourteen years working on 6.7 Cummins engines. Here is my honest take on what actually goes wrong and why this engine earned its reputation.
Troubleshooting
How to Clean a DPF Filter (Regeneration Guide for Diesel Trucks)
Your truck is asking for a DPF regen and you are not sure what to do. Here is what actually works, from a mechanic who has done hundreds of them.