Diesel-powered vehicles require diesel exhaust fluid to reduce engine emissions, making them less harmful to the environment ...
Engine oil turns black from a combination of combustion byproducts, heat oxidation, and detergent additives suspending carbon ...
Cummins released details of its 2027 X15 diesel engine, which it says meets EPA 2027 emissions requirements while improving fuel economy — and without adding weight or using more diesel exhaust fluid.