Only had this tractor for a month, 2016 l4701with loader, nice unit, have not worked it much yet but seems to have plenty of power although little light in the rear so buying me a heavy hitch ballast weight bracket to solve that. Just wanted to say went through the first regen with it an seemed to preform as expected. Only lasting 2 tenths of a hr an having to raise the rpms, 200 rpm. A slight notice in engine tempo an smelled the exhaust getting hot.Wasnt sure how Kubota was within the emissions standard but all seems good.