MotorTrend on MSN
What Is DEF and How Does It Work?
DEF is a key component in lowering pollutants emitted from diesel engines, helping to reduce harmful emissions.
MotorTrend on MSN
Our Chevrolet Silverado 1500 ZR2 Duramax Uses a Lot of Diesel Exhaust Fluid. Is This Normal?
That all said, the fuel savings does come at the cost of the consumable diesel exhaust fluid. DEF is a mixture of synthetic ...
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