DEF stands for diesel exhaust fluid, and it is mandatory for all semi-trucks to use it in the United States. Here's why and ...

DEF stands for “diesel exhaust fluid,” also known by the brand AdBlue®. It’s a chemical used in the SCR system of modern diesel vehicles to convert the harmful nitrogen oxides in vehicle ...

as the real damage caused by DEF in your diesel tank comes once a vehicle's engine turns over and tainted fuel works its way through the fuel system. Catching the mistake early may well save you a ...

HOLLY, Mich., April 16, 2025 (GLOBE NEWSWIRE) -- A diesel truck, car or SUV that is losing power and fuel economy, shutting down unexpectedly, and/or has a DEF warning light illuminated is probably ...

Most DEF tanks have only sediment filters and lack the kind of high-efficiency filtration common to diesel fuel and air systems. Transfer containers should be avoided. If a container must be used ...

One of the systems that needs routine cleaning is the Diesel Exhaust Fluid (DEF) / AdBlue® / Selective Catalytic Reduction (SCR) system. Rislone has just the thing with its new DEF Crystal Clean ...

Over time, these crystals can build up, clogging system components and interfering with normal operation. New Rislone DEF Crystal Clean® Diesel DEF & SCR Emissions System Cleaner is a one-of-a ...