Jun 25, 2009 11:47 AM

Mack Trucks Inc and Volvo Trucks North America have named Terra Environmental Technologies Inc (TET), a Terra Industries Inc company, as their preferred supplier of Diesel Exhaust Fluid (DEF). Mack and Volvo are both part of the Volvo Group of companies.

DEF—which TET supplies under the brand name TerraCair Ultrapure DEF (TerraCair DEF)—is a liquid solution used in Selective Catalytic Reduction (SCR), which Mack and Volvo are using to achieve near-zero levels of nitrogen oxide (NOx) emissions called for in the federal diesel engine regulations taking effect in January 2010. The 2010 regulations, developed by the US Environmental Protection Agency (EPA), require NOx emissions to be reduced more than 80% from the standard that took effect in January 2007.