In this video, we explore the consequences of accidentally adding DEF fluid to a diesel tank, which contaminated the entire fuel system of a low-mileage truck. A professional assessment was ...

Reality: DEF isn’t a fuel additive at all. It doesn’t go into the diesel tank and never mixes with diesel fuel. DEF is stored in a separate tank and injected into the exhaust stream after combustion, ...

The modern world relies on diesel fuel for everything from personal transportation and hauling products and goods across the country to powering construction equipment and farming implements.