Diesel Exhaust Fluid has an expiration date, after which it becomes far less effective and can even damage your engine.

This is the kind of question where we'd better talk about terms before answering it. That's because AdBlue is a brand name for what folks in the United States usually call diesel exhaust fluid — aka ...

Diesel Exhaust Fluid (DEF) is a crucial component in modern diesel vehicles, introduced to comply with US Environmental Protection Agency (EPA) regulations that began in 2010. It's a solution made up ...

We may receive a commission on purchases made from links. The government's strict emissions limits for combustion-powered vehicles have pushed automakers to develop technologies that let their engines ...