First of all I've been reading through allot of posts and what a great group of people. I'm from georgetown tn and have a 45.acre farm. I have been using a 48 Ford 8n and recently my bil brought his jd 4052r over because I needed to do some dirt work. I started using it and within 20 minutes got a stop sign and blinking Regen. I called him and he said it would clear itself. I read up and decided to not and it seems we cant I just clear it. That brings be to the topic. I've ran across a deal on a barn kept 5310 4wd, low hours, 540 feel, 7 ft jd brush hog, and hay spear for 10,000. Looking it up it looks to be a great deal. After dealing with the emissions on the newer tractor does the 5310 have it? Also would the5310 have the same type performance I'm getting with the 4052? Thank you all in advance.