GM Authority

Everything To Know About DEF With The GM Duramax 3.0L LZ0 Engine

Diesel engines like the 3.0L Duramax require special maintenance, including the use of DEF, or Diesel Exhaust Fluid. Now, GM ...
For Construction Pros

Your Guide to DEF TLC

Since January 1, 2010, on-highway vehicles sold by any truck OEM other than Navistar have been equipped with a selective catalytic reduction (SCR) system using diesel exhaust fluid (DEF). “Therefore, ...
Fleet Owner

API warns truckers to only use certified DEF

The American Petroleum Institute (API) recently issued a bulletin stressing the importance of only using certified diesel exhaust fluid (DEF) for the diesel-powered vehicles that require the fluid.
For Construction Pros

Command DEF (Diesel Exhaust Fluid)

Prestone Command DEF (Diesel Exhaust Fluid) is a liquid reducing agent developed for use in all diesel engines that are equipped with a Selective Catalytic Reduction (SCR) system. Formulated with high ...