Diesel exhaust fluid, or DEF, is a key component in lowering pollutants emitted from diesel engines, helping to improve efficiency and reduce emissions.

Time to Clean The new Rislone DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner does exactly what you think it should. It cleans your DEF system, dissolving the crystalized urea.

RELATED: EPA Sets Strict Emissions Standards for Heavy Trucks The systems thus far have de­pended on hot exhaust to work. This means the basic SCR system works well when the engine is under load ...

It works with SCR systems to convert toxic pollutants like nitrous oxides into innocuous products like water vapor and nitrogen.

Duke Energy is installing SCR systems for NOx control at its two-unit Belews Creek power station in north-central North Carolina.

With new EPA guidance on diesel engine derates, truckers may have more time to address aftertreatment system faults. Yet maintenance pros warn delaying repairs could lead to more expensive damage ...