DD15 or ISX

DD15 with the DT12 is the best combination.

 

After a couple of years you can look forward to assorted DPF issues with the DD15. We're going through that now with our Freightshakers.

 

We took possession of a T680 with the ISX earlier this spring with 320,000 miles. Within 10,000 miles we had to go into a shop for five days to replace all of the emissions components. It now has 380,000 miles on it and we have been to the shop for other times for other issues. The ISX definitely has its own set of problems although the engine itself seems to be really strong. It does use oil whereas the DD 15 did not.

 

2016. Our first company we got an almost new freight shaker and drill that until there was 230,000 on the odometer with almost no issues whatsoever. Our second company we started out with another Freightliner and turn that in and about 170,000 miles again with no issues. I don't know well how well they hold up once they get to 250,000 but up until then there really solid trucks. They have a really crappy ride though

 

yes ! the best combination for company drivers and when the truck has warranty(odometer shows 500.000 or less)..

 

A friend just dropped 30 to 40 into his 2013 t680 with an isx. It had around 450 to 500 thousand miles. Started at the filter and worked their way forward. Ended up rebuilding the engine after they discovered a broken valve seat in it plus a couple injectors that were overfueling. They claimed thats what plugged/cracked the dpf filter. Plus a turbo to top it off. He was off work for a month dealing with this nightmare. The thing that ticked him off is that the engine ran fine with good power and didnt use any oil blah blah blah. Until the cel light came on. Good luck on your choice.

 

At my mechanic's shop I see lots of isx's needing rebuild at 500-600k miles. 2004-2007 with egr only were good though, lasted 1.2-1.5 mil miles

 

dd15 hands down over isx has a lot of issues with emissions and engines themselves, dd15 has some issues with emissions and injectors or pumps but nothing major as i see the other trucks. I'm a volvo guy and right now i would really have to think prob i would take dd15 over volvo d13 as well not as much issues i see i would suggest you get some kind of idle system like apu or the freightliner version which is a battery operated apu and i think you will be pleased.