General Information
Important: Depending upon local jurisdictional emissions guidelines, vehicles that are domiciled outside of the U.S. and Canada may not have engines and/or emissions aftertreatment systems that are compliant with current emissions regulations.
Notice: It is extremely important that the following guidelines be followed for engines that comply with EPA10 and newer regulations, or damage may occur to the aftertreatment device, and the warranty may be compromised.
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Use ultralow-sulfur diesel with 15 ppm sulfur content or less.
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Do not use fuel blended with used engine lube oil or kerosene.
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Use only approved engine lube oil. For lists of engine oils approved for Detroit Diesel engines, refer to the Engine Operator Manual, accessible on Lubricants, Fuels & Coolants on the DTNA Portal. For third party engines, please refer to the engine manual.
Important: Using non-specification fuels or oils can lead to shortened diesel particulate filter (DPF) cleaning or replacement intervals.
Important: See the engine manufacturer's operation manual for complete details and operation of the aftertreatment system (ATS).
The EPA mandates that all engines built after December 31, 2009 must reduce the level of emissions exhausted by the engine to the following levels:
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Nitrogen Oxides (NOx) – 0.2 g/bhp-hr
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Particulate Matter (PM) – .01 g/bhp-hr
To meet EPA guidelines, engines that are compliant with EPA10 and newer regulations use technology known as selective catalytic reduction (SCR) in the exhaust aftertreatment system (ATS). The ATS includes an aftertreatment device (ATD), with the addition of SCR to reduce NOx downstream of the engine. The SCR process requires the introduction of diesel exhaust fluid (DEF) into the exhaust stream.
After exhaust gases leave the engine, they flow into the ATS. First they flow into a two-part ATD, comprised of a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF). The DPF traps soot particles, then exhaust heat converts the soot to ash, in a process called regeneration (regen). After exhaust gases leave the DPF, a controlled quantity of diesel exhaust fluid (DEF) is injected into the exhaust stream. In the presence of heat, DEF is converted to ammonia gas, which reacts with NOx in the selective catalyst chamber to yield nitrogen and water vapor, which exit through the tailpipe.