66.4 HP. SCR systems inject Diesel Exhaust Fluid (DEF) into the exhaust stream. It turns out that Americans truly do adapt and overcome. Seems like I read a couple years ago that Kubota was considering def in some of the really big models. According to the EPA website, PM is mainly composed of small carbon particles and other toxic substances created during incomplete fuel burning process, i.e. We on our larger tractors and construction equipment just use DEF instead of a DPF. A new DEF fill tank cap is located on the left side of Bobcat all-wheel steer, skid-steer and compact track loaders. Yes, Kubota does use DEF fluid in some of its vehicles. S spacemanspiff Member Equipment M5-111 Best practice is to pour directly from the DEF 2.5 gallon container. As ChasA said, the DEF is injected into the exhaust system, not the engine. A diluted DEF without the mixture of 32.5% urea can be damaging to DEF and SCR but cases of that happening are rare. However, most of their tractors fall just under the threshold for emissions requirements. It never gets mixed with the diesel fuel. The fuel system lines are not compatible with DEF and slowly corrode and over time. Reading a manufactures code can be a bit tricky and each one is a little bit different. In 1998, Tier 1 standards for nonroad engines below 50 HP were adopted. The DEF system is required on all Kubota tractors in order to meet emissions standards. I was ready to pull the trigger on a mx4700 rite up until the dealer gave me the spec., sheet and it said it had an egr valve. It may not display this or other websites correctly. This is caused by a faulty fuel injector. Through the following links, you can skip to the menu or to the main text in this page. A neighbor has an SVL95-2S about 2 years old that had a bunch of expensive warranty work on the emissions. The Tier 3 standards phased in between 2006 and 2008, then came the Tier 4 Interim from 2008 to 2012, and now the Tier 4 Final that requires the use of DEF. Kubota diesel engines below 19 kW has achieved certification for the EU Stage V emission regulation. The control system monitors for DEF contamination, and will send a warning signal to the dash and/or limit engine output according to the contamination level. Stock Horsepower Stage 1 Horsepower (10% / 105hp) Stage 2 Horsepower (20% / 115hp) Tooling. The 1.1 percent increase in that example didnt sound all that bad, but the overall estimate for most nonroad categories was for a 1-3 percent hike. Freezing and thawing cycles has no impact on the grade of the product. Warning Do not disconnect battery for 12 minutes after shut down to allow for complete cool down & DEF purge. If a regenerative DPF filter is used, attention to that background cycling is important, especially where the tractor is physically located while that regeneration is taking place. Then the exhaust travels to a Diesel Oxidation Catalyst (DOC) and diesel particulate filter (DPF) where the DOC further cleans particulate matter with increased heat while the DPF collects the remaining soot.