Hi Misterlift hope you did not mind me copying your thred. I think you are right this will become another function the engineer will have to take on. I can see this becoming quite a task because i'm not sure ware these are located on the trucks. If they are in a hard inescapable place then this will take more time. Some time's designers have a problem fitting these systems into the truck and acceptability is not at the foremost of there mind's. I'm sure this will be more apparent on the smaller trucks like the 5,000kg - 8,000kg range. I'm sure some companies will struggle with this. As for the sales rep like you have pointed out do they know the difference yet. I'm sure the one who sell the bigger trucks will know some thing about them but the other reps might knot. And i'm sure if it's a Hyster linde or a rep who's company use **** engine's will be saying the EGR system is better. Evan tho it seems the SCR system is the better one. I don't know any company apart from one who is planning to use the SCR system on the smaller truck. I think all the engine suppliers in this area have gone for the cheaper to design EGR system.