Owners of vehicles with a diesel engine over 74 hp that also meets the 2010 EPA guidelines as part of the SCR reduction system must use DEF. It's essential not to let your DEF tank run dry ...

Understanding this increasingly visible emissions control system is becoming more ... dominant segments. Where DEF really becomes critical is in big diesel engines. We don't mean like your ...

However, with most cars offering adequate early warning systems to alert you about low-DEF levels, there's no reason DEF deficiency should join the list of more common diesel engine problems.

The first thing to know is that if diesel fuel is mixed with DEF, or if DEF or gasoline is ... run but the engine has not been cranked, the system from the fuel fill pipe to the high-pressure ...

One of the systems that needs attention is the Diesel Exhaust Fluid (DEF) system, which as most diesel owners know can be finicky and troublesome. The folks at Rislone have developed a new product ...

a 2.5-gallon tote of DEF sells for between $15 and $25 at the local parts store. Flipping through the Silverado owner’s manual, you’ll find a section dedicated to the diesel exhaust system.

This usually includes removing the Diesel Particulate Filter (DPF), Exhaust Gas Recirculation (EGR) system, and the Selective Catalytic Reduction (SCR) system that uses DEF (diesel exhaust fluid).