Are the later Paccar engines better than the earlier ones?

The only way to help an emissions engine that has to idle a lot is to increase your oil change frequency. Excess soot builds up in the oil with a lot of idling, because the exhaust is choked and it has nowhere to go.

You'll also need enough time at highway speed to give the system a chance to regen, or else plan on doing a parked regen every other day.

 

Yes seems like more frequent oil changes and parked regens are the things that you have go do for these emissions trucks. Something to think about for sure. I hear good and then horror story’s about the paccar. I’d prefer a cummins but the pickings are slim for my price range

 

Unpopular opinion but displacement is a big factor. Ever wonder where the big bore 16L engines went? 80k and under typically just doesn't work an engine hard enough for the aftertreatment system to function optimally. Better to make a 13L work than to have a 16L saunter along, hardly working.