The U.S. Environmental Protection Agency and the California Air Resources Board have presented preliminary proposals aimed at the alleged compliance loopholes found in current 2010 liquid-based ...

On March 31, Navistar Inc. quietly filed a challenge in a federal appeals court to the U.S. Environmental Protection Agency’s Feb. 18 certification requirements for heavy-duty engines using selective ...

Before reaffirming Navistar’s intention to be the sole U.S. truck manufacturer not to use selective catalytic reduction (SCR) to meet the upcoming 2010 diesel emissions requirements, Tim Shick, dir.

Navistar is suing to force the Environmental Protection Agency to go back and re-test SCR engines for compliance with clean air standards and other aspects of the 2010 emission rule. In the suit, ...

The Environmental Protection Agency has filed a motion to dismiss a federal lawsuit filed by Navistar Inc., rejecting the engine maker’s claims that the agency must test selective catalytic reduction ...

Navistar International Corp. said it had reached an agreement May 3 with the U.S. Environmental Protection Agency that settles lawsuits it had filed in March 2009 concerning the agency’s certification ...