Some systems perhaps... This was very much a sour grapes demonstration that Navistar did demonstrating how the emissions technology could be defeated... sour grapes because Navistar is comitted to EGR/particulate filter setups rather than DEF. They didnt' say anything about GM so I assume that their system is working correctly, or at least in the manner that you suggest. Their specific gripe was with Dodge on the 5500 model, Freightliner in general, Cummins and Detroit Diesel because their ECM's were not derating properly and also I think Kenworth... Wether the video is true or not, I don't know... but I'd think their claims would be very liableous if they were not true.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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