Fist new Truck Kenworth 2010 T660 C15 475, 521000 miles.

There's a good reason there is a glut of 2008-2011 models with 4-600,000 miles on the market. Once warrantee runs out, they can be very costly very quickly to maintain, and you can thank Uncle Sam for that. I know it is a big pill to swallow and new truck payments suck, but buying new and extending the warrantee is the way to go if you want a newer truck. Otherwise, buy a pre-emissions truck and put the money into it to make it what you want.

 

I owned one. '08 that motor's killer is idle and IVAs. Get the head cabling replaced (2 harnesses along with IVAs and never idle.
The ARD head needs to be replaced yearly at a cost of about $1300 (dealer installed) that is if you make it to the dealer and don't need to get it towed.
aside that, I never had any problems with "that" engine, though my truck was a lemon and I invested great deal of cash in it.

I'd do this^^ if possible. Find yourself a bad an us w9 2001-2003 with that special 6NZ cat or a 3406E.
Detroit those years were really good also.
good luck.

 

In my very unprofessional opinion, you at least want a pre dpf model. Egr valve are a pain and are expensive, but are a breeze compared to the non-def dpf systems. Depending on the engine, a 2007 will have the EGR valves, but not the dpf

 

Go under 2007 then look at the 3406 mechanical cats good and they run hard

 

No, I had an 05 that went over a million before I had it inframed, and now have an 07, they are great motors. They are still Acert's, but I wouldn't hesitate to go out and buy another one tomorrow.

 

I would stay away from all trucks 2002-2010. Those are all first generation emissions. Cummins has or had trouble with overhead cams going out for no reason. Cat got out of the truck engine because accert design was bad idea. The International Maxx Force engine is so bad is just crazy. The Maxx Force engine is the old Cat accept. International bought the engine block design from Cat. Detroit Diesel stopped making the S60 and designed a new engine with all the emissions in mind in 2008. That's the DD15 and all trucks after 2010 have DEF system. You want a truck with DEF because that allows them to use less EGR.

One of the trouble 2005-2007 have so much trouble with the DPF filter clogging is because those engines don't run hot enough going down the road. I read they need to run 180+ coolant just so the DPF system will work correctly. That's why the new engine run like 194-200 just normally going down the road. That way you don't have the parked regen troubles any more.

 

Wasn't the 6NZ cat put in trucks from 2000-2003? I thought 2003's were no egr no dpf? Please enlighten me.

Adam