pre/after 2004 diesels

[Sleddgracer]

I'm aware of problems caused by pollution control after 2004, but did they, if they did, what year did the problems get sorted out?

[Johnny Mullet]

Depends on the engine. The DT466 from 04 and up were pretty good even with the EGR system. The Maxxforce 7 and Maxxforce 10 never got it right. Cummins even with the emissions are not bad either. C7 Acert Cat is not as reliable as the older models, but not horrible.