Engine Technology Forum Opens Resource Hub for SCR and DEF as Emissions Rules Face Scrutiny

The Engine Technology Forum has rolled out a dedicated online resource center focused on selective catalytic reduction (SCR) systems and diesel exhaust fluid (DEF), aiming to give fleet operators, technicians and policymakers a clearer picture of how these technologies fit into the push for lower truck emissions.

The move lands in the middle of an ongoing policy fight over how far and how fast heavy-duty diesel emissions should be tightened. By pulling SCR and DEF information into one place, the Forum appears to be positioning the hardware as part of the path toward cleaner diesel rather than something destined for the scrap heap.

For anyone running or servicing commercial trucks, the practical details of SCR maintenance and DEF handling remain central to keeping equipment compliant and on the road. The new hub is intended to consolidate those answers instead of leaving them scattered across the web.