5 October 2002

The Lubrizol Corporation announced that the US Environmental Protection Agency (EPA) has registered PuriNOx™, a water-diesel fuel emulsion, under its fuel and fuel additive registration program.

EPA registration is legally required for all fuels and fuel additives sold for highway vehicles in the United States. Prior to registration, market development of PuriNOx fuel has occurred under EPA’s research exemption that required monitoring of all on-road usage.

The registration applies to the PuriNOx warm-weather blend, which is sold in California and Texas. Testing for the cold-weather blend is in progress, with Lubrizol targeting the registration for the second quarter of 2003.

PuriNOx fuel is currently marketed in North America and in several countries in Europe for applications including on- and off-road vehicles and equipment, said Lubrizol. PuriNOx consists of diesel fuel, water and Lubrizol additives blended to form a stable, homogeneous emulsion. The registered warm-climate formulation contains 77% diesel fuel, 20% water, and 3% PuriNOx 1121A additive package. The winter formulation consists of 74% diesel fuel, 16.8% water, 5.7% methanol, and 3.5% PuriNOx generation 2 additive package.

According to Lubrizol, the average emission reduction effect of PuriNOx is 19% for NOx and 54% for PM. At this time, PuriNOx fuel is the only emulsified diesel fuel with EPA registration.

In January 2001, the California Air Resources Board (ARB) verified the PuriNOx emulsion to provide a NOx reduction of 14% and PM reduction of 62.9%. At this time, two emulsified fuels are verified by the ARB: PuriNOx and Aquazole by TotalFinaElf.

Source: Lubrizol Corporation