Quote:
Originally Posted by Trochu
I'm not sure about the Bud, but the new John Deere 9RX that's coming, meets "Final Tier 4/Stage V-compliant....emissions requirements using exhaust-gas recirculation technology". So while it doesn't use DEF, it does have emissions equipment on board, just switching EGR for DEF.
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Everything has to meet Tier 4F in Canada and US right now. Depending on HP rating though changes emission requirements. For example Tier 4 interim on high HP diesels was close to Tier 3 standards of the older truck engines. For example the C175s in the 797s that are Tier4F use DEF but have no EGR or DPF. John Deere isn’t using DEF so they are likely using a DPF. That Case Quadratrac uses DEF but no DPF. Your pick-up will have both a DPF and DEF to meet the emissions standards of its HP level. They are both Tier 4 but the big HP guys are allowed to be dirtier.