Monaco Counters Last Week’s Pro-SCR Letter

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November 24, 2010 by   2 Comments

Editor’s Note: Monaco RV LLC President Kay Toolson and Navistar North American Truck Group President Jack Allen have issued a response to a pro-SCR letter distributed last week by several motorhome builders utilizing Freightliner Custom Chassis Corp. diesel chassis. Both SCR, which Freightliner employs, and EGR diesel-powered platforms, which Navistar has developed, are a technological response to the Environmental Protection Agency’s more stringent 2010 diesel emissions standards. Their letter follows.


To all Recreation Vehicle dealers (US and Canada):

Why are so many RV manufacturers pointing at Monaco RV? Think they are worried? They should be! EGR is a proven technology and the latest advancement in emissions control for the next generation of diesel engines. SCR is not.

We were shocked and disappointed by an open letter that was recently signed by seven RV manufacturers, claiming SCR as the best 2010 emissions solution for customers. We disagree. Advanced EGR is the best solution for customers because it is as simple as turning the key. At Monaco RV, we’ve never been about following the crowd – we build products based on what’s right for our customers.

In their letter, there are claims that are either outright lies or don’t make sense.

EGR Works

  • Exhaust Gas Recirculation (EGR) is a proven technology that has been in use for years. NavistaEGR to the next level. It is a simple, no‐hassle solution.
  • Navistar has delivered over 20,000 Advanced EGR‐equipped vehicles, including Monaco RVs.

EGR is Simple

  • Advanced EGR doesn’t require additional components or complexity to operate a motorhome. Our customers won’t need to change anything about the way they go RVing.
  • EGR doesn’t require “DEF” (urea) to run.

EGR Delivers

  • MaxxForce engines in Monaco RV products are fuel‐efficient, quiet and powerful. Their letter claims that SCR elivers better fuel economy. Compared to what? Themselves?

The only thing the group’s SCR letter was right about is that Monaco RV is the only manufacturer to offer its customers Maxxforce Advanced EGR in an integrated coach product. Which makes you wonder: Why would seven manufacturers feel the need to write an open letter making a case for SCR? What are they worried about?

The answer to this question is anyone’s guess. But we can tell you why we chose the Advanced EGR solution. It’s simple: It reduces NOx inside the engine and it requires absolutely no changes to the way our customers go RVing. In other words, we put the customers first by utilizing a technological solution that is right for their needs.

And while we’re on the subject, here are some things you may want to consider about SCR and the required Diesel Exhaust Fluid (DEF):

  • Running out of DEF causes the engine to derate and eventually shut down.
  • At low RPM levels, such as at idle, SCR doesn’t work, creating higher, pre2007standard level emissions. Think about coach owners sitting in campgrounds or in traffic. This is a step backward for clean air.
  • DEF freezes at 12 degrees F and storage isn’t recommended above 77 degrees F.
  • DEF (urea) is a hazardous chemical.
  • DEF and related components add to the complexity and cost of operating motorhomes.

Don’t believe us? Read the engine OEM owners’ manuals for details.

We ask that you experience for yourself the next generation of engine and RV technology by visiting our display at the upcoming RVIA show (booth #3200) and get more details at our website:


Kay Toolson, President, Monaco RV, LLC Jack Allen, President, Navistar North American Truck Group

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2 Responses to “Monaco Counters Last Week’s Pro-SCR Letter”

  1. Waly Schmidt on November 24th, 2010 3:40 pm

    Kay- Just “competition talk” about EGR. They had to say something. NOW- THINK SERIOUSLY ABOUT THIS ENGINE FOR AN ENTRY LEVEL “BEAVER” PLEASE.

  2. Brandon on November 29th, 2010 11:28 am

    This is laughable. My company has been supplying DEF to customer with on-road and off-road applications for over the past year. There are several things contained within this letter that show Monaco is being influenced by the lies, and half truths that Navistar is continuously telling the general public. Some of the incorrect items are as follows:

    1) Running out of DEF will eventually cause the engine to derate and eventually shut down, however, the range for example of Class 8 Trucks is beyond 3,000 miles which is more then enough time to pay attention to your DEF sensors or gauges and find a location to refill your tank.

    2) DEF is not a hazardous material. This product is a non regulated product, and does not require placards regardless of quantity being hauled while shipping. If you do end up getting this product on you, it is recommended to wash your hands thoroughly after exposure.

    3) SCR systems are a bit more complex, and do add a cost to the overall purchase price of these units. However, with an increase in fuel economy due to the improved efficiencies gained through this system you will see a return on your investment. Pilot Truck Stops is selling this product for $2.79 per gallon, and even with this cost factored into your fluid requirements customers are still seeing a range of 3-7% improvement in overall fuel economy.

    4) Lastly, and I think most important is that for all the bad things that Navistar is saying publicly about SCR, why are they using this technology in Latin America? They currently are producing engines with SCR technology in them in Brazil for Volkswagen Truck and Bus. Hmmmm?

    There is more to this story, but I think you begin to see that the truth needs to be told about this technology, and the lies being told about it. More importantly is the fact that this technology has been in existence for years, and DEF has been used in Class 8 trucks for the past 5+ years with great success.