mikehaugen
Elite Member
I am not a pollution engineer but I seem to remember that with diesels the particulate (soot) and NOx were the big offenders on these trucks. I don't know if the particulate filters and exhaust fluid will be the long-term answer. I wonder if we will have to have those on our small tractors? I have seen a lot of stuff written but I have never actually heard of a 50-HP or less tractor having the extra DPF/DEF.
My understanding that new (2013 I believe) tractors 25hp or higher now fall into tier IV requirements, which I believe is the same as is for the pickups. Not sure how they have achieved this though.