Under certain conditions, the water in DEF can evaporate, leaving behind white crystal urea deposits. Over time, these crystals can build up, clogging system components and interfering with normal ...

As another Canadian winter approaches, can problems with diesel exhaust fluid (DEF) be far behind? Bill O’Ryan, senior manager of DEF with the American Petroleum Institute (API) says drivers and ...

Most diesel truck owners understand how to put diesel exhaust fluid (DEF) in their trucks. However, some make the mistake of getting DEF in their fuel tank instead of the dedicated DEF tank. As the ...

DEF. I don’t think there is a more hated acronym in all of trucking. DOT even pales in comparison. Would you rather a CRA audit, or DEF issues? “Alex, I’ll take CRA audits for $1,000 please.” DEF, of ...

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 ...