6.7 Cummins Non DEF vs Newer DEF Trucks
Hi, I used to have a 2008 6.7 CTD 4x4 which towed great but the fuel economy sucked and I know many folks had issues with the first era of emmissions "bluetec" trucks. Last week I picked up a new 201...
Forum Discussion
In the past, combustion temperatures had to kept down to prevent tailpipe emissions which resulted in more soot buildup in the DPF and more regens. In current models, the exhaust is treated with DEF and allows for higher temperatures which reduces soot and regens.
