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Ed C

Cape Cod, MA

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Posted: 10/27/20 08:00am Link  |  Quote  |  Print  |  Notify Moderator

Most 450 HP rigs with a tag are rated for 15,000 but to get over that you have to move up.


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dodge guy

Bartlett IL

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Posted: 10/27/20 12:17pm Link  |  Quote  |  Print  |  Notify Moderator

Not sure if it’s possible with those years but I would limit myself to something without DEF. Anyone know when DEF made it into the MH chassis?


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Mr.Mark

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Posted: 10/28/20 08:07am Link  |  Quote  |  Print  |  Notify Moderator

dodge guy wrote:

Not sure if it’s possible with those years but I would limit myself to something without DEF. Anyone know when DEF made it into the MH chassis?


2010 was the year that DEF was introduced. Google says Dodge diesel trucks got it in 2013. DPF's were required on the 2007 RV chassis's.

DEF engines run well. Yes, it is another item that could potentially need maintenance but it makes the engine run better than with just the DPF. I wish I could explain it better but I'm not a mechanic.

My 2008 Monaco Dynasty was the first year of the DPF which was on a 2007 chassis and it ran well. No issues in the almost 70,000 miles and 7.5 yrs. that I owned it. It would regen about every 8,000 miles.

My 2015 Prevost has both the DPF and DEF, it has gone through a regen only 3 times in almost 60,000 miles with the third just happening about 1,500 miles ago. No issues so far with any of the emission controls.

If somebody really wants a simpler engine, they should get a 2006 or earlier engine with no DPF or DEF. 2003 or earlier (if I'm not mistaken) has no EGR.

Safe travels,
MM.


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warrenjo46

Matthews, NC

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Posted: 10/31/20 09:45am Link  |  Quote  |  Print  |  Notify Moderator

DEF engines run well. Yes, it is another item that could potentially need maintenance but it makes the engine run better than with just the DPF. I wish I could explain it better but I'm not a mechanic.



Safe travels,

From what I have read, DEF is engineered to meet NOX emission without exhaust gas recirculation (EGR). By eliminating EGR the engines can run at a higher combustion temperature and as a result have higher efficiency and performance.

You are welcome to fact check this post.

Warren

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