Steiger Man - 10/30/2020 09:15 We’ve been running JD tier 4 engines since they’ve come out on over 20 pieces of equipment. Have had a total of 1/2 hour downtime related to the emissions on these engines. Now I’m sure the next guy will say he can’t go 2 hours without his JD tractor throwing a code. So I think it’s a problem you can’t run away from unless you turn the clock back on your machinery 20 years.