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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.
Patents hint at an e-turbo twist that could make lag vanish and midrange surge. A mystery machine may bring real boost to the ...
Land Rover's second-generation Discovery, a.k.a. the Series II, reminds us of a slightly pudgy kid who shows up for a track ...