International Truck and Engine, a subsidiary of Navistar International, has announced that its 2010 emissions strategy will not include SCR. As expected, the US truckmaker has decided to focus on in-engine technologies, including EGR, to reduce levels of NOx and particulates. International's SCR-free strategy will be employed on its core applications - Class 4 to 8 trucks with MaxxForce branded engines.

Industry experts had predicted that Navistar would pursue an SCR-free emissions strategy for US2010. In fact, the company has worked closely with SCR-sceptic MAN on the development of in-engine technologies and EGR techniques. It is unclear whether this policy will be extended to Navistar's new Class 8 MaxxForce engine entering production in 2008. There have been recent rumours in the industry press that MAN and Navistar are collaborating on a US2010/Euro VI SCR system for heavy-duty applications. The new Class 8 MaxxForce engine is Navistar's first venture into the US heavy-duty engine market.