The UREA(has a freeze point of 12f and a problem over 85ishf?) has not been on the commercial market until now. testing? Yes limited use. generally speaking, the UREA plus the DPF is standard on all diesel motors(2011 yr). DPF's have been out in the market since 2007. EGR's earlier. Low sulfer diesel since, what 2005? ULSD...since 2007? lower sulfer= lower BTU's,= lower fuel mileage.
Been an owner operator for 20 yrs. I am very picky about keeping my costs down. These gov emissions are costing me more money in direct costs for the equipment. Plus making me burn more fossil fuel. I agree that we need to keep the Nox down, but common sense has gone out the window.
i own a 2005 international truck. Cost in 2005? $105,000
the exact same spec's truck, 2011 model? $145,000
but hey,what do i know?