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California Air Resources Board verifies Lubrizol DOC

1 June 2004

The California Air Resources Board (ARB) has verified the AZ Purifier and AZ Purimuffler (a diesel oxidation catalyst and a catalytic muffler, respectively) by Lubrizol Engine Control Systems for model year 1996 to 2002 off-road diesel engines as a “Level 1” (25% PM reduction) device. The application includes off-road equipment at ports, railway yards, and other intermodal/freight operation. The verification requires the use of ultra low sulfur diesel fuel (max 15 ppm S).

In January, Lubrizol received ARB verification for its Purifilter diesel particulate filter, for use in selected highway engine applications.

ARB verification letter

Source: California ARB