love diesels. Have Mercedes 6cyl & chevy 6.5 turbo 3500. Trucks acting up. Seems like maybe PMD's going out. Any advice? Do I replace Oem or replace & temping cooler. Huge price difference. Thinking if downsizing to regular cab so just want reliability fir trade or resale. Trucks had all else done electronic wise, radiator, trannie (auto). It's a Jerrys custom from TX. Thinking of getting or trading for older dodge Cummings??? Trucks been great & stills nice. Just don't need quad cab & full bells whistles, hitches etc.

 

What kind of issues are you having?