New Mobil Delvac MX Exceeds API CI-4 PLUS And CI-4 Specifications

FAIRFAX, Va.--(BUSINESS WIRE)--June 16, 2006-- Continuing its long-standing tradition of being at the forefront of lubrication technology and helping drivers and fleet managers extend the life of their engines, ExxonMobil today announced two significant changes to its premium line of Mobil Delvac heavy duty engine oils.

To meet the American Petroleum Institute's API CJ-4 diesel engine oil specification, which encompasses the new requirements for Proposed Category 10 (PC-10), ExxonMobil will introduce a new formulation of its "Million Mile Oil," Mobil Delvac 1300 Super 15W-40, in October.

With more than seven million miles of extensive field testing behind it, the new formulation of Mobil Delvac 1300 Super 15W-40 will exceed category requirements for soot control, wear protection, oil consumption and deposit control. The new formulation will be backwards compatible and meet the requirements of API CI-4 and CI-4 PLUS, and will deliver significant performance enhancement compared to API CI-4 PLUS technology, helping to extend the life of both new and older engines, as well as new emissions after-treatment systems.

In addition to its reformulated Mobil Delvac 1300 Super, in October ExxonMobil will introduce a new member to its Mobil Delvac line, Mobil Delvac MX 15W-40, which will exceed the API CI-4 Plus specification.

"With new U.S. Environmental Protection Agency emission regulations for heavy duty vehicles taking effect in 2007, diesel engine oil performance requirements will become more stringent," said Douglas Pond, Commercial Vehicle Lubricants Advisor - Americas, ExxonMobil Lubricants & Specialties. "As we have for more than 80 years, since the Mobil Delvac brand was introduced to the marketplace, ExxonMobil continues to set new standards for advanced lubricant technology and performance.

"In over 7 million miles of extensive field testing, the new Mobil Delvac 1300 Super formulation delivered exceptional results, giving us great confidence to bring it to market as a cutting-edge CJ-4 product for 2007 engines using after-treatment devices. With reformulated Mobil Delvac 1300 Super, our customers can also have the peace of mind that they will be able to maintain current drain intervals for older engines using diesel fuel with either 15 ppm or 500 ppm (parts-per-million) sulfur content.

"For our customers in the off-highway industry, Mobil Delvac MX 15W-40 will offer an ideal solution to help protect and extend the life of their equipment with a product that has proven performance in engines that require both CI-4 and CI-4 PLUS oils."

Additional information about the Mobil Delvac family of heavy duty diesel engine oils can be found at www.mobildelvac.com.

ExxonMobil, Mobil and Delvac are trademarks of Exxon Mobil Corporation (NYSE:XOM) or one of its subsidiaries.

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