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

General Motors is currently investigating reports of an occasional misfire affecting vehicles equipped with the 3.0L I6 LZ0 ...

President Donald Trump has granted a full and unconditional pardon to Wyoming diesel mechanic Troy Lake, who was convicted last year for tampering with vehicle emissions systems. Lake, 65, had served ...