ExxonMobil Heavy Duty Engine Oils Meet New API CI-4 Plus Specification

FAIRFAX, Va.--Aug. 1, 20040, 2004--Exemplifying its commitment to be at the forefront of lubrication technology and the depth of its product offerings for the heavy-duty vehicle market, ExxonMobil today announced that four of its heavy-duty diesel engine oils have met the American Petroleum Institute's (API) new CI-4 Plus specification.

The company's Exxon XD-3 Elite 15W-40, Exxon XD-3 Extra 15W-40, Mobil Delvac 1300 Super 15W-40 and Mobil Delvac 1 5W-40, all meet the API CI-4 Plus specification.

A modification of API's CI-4 standard, originally released in October 2002, CI-4 Plus licensed lubricants are required to deliver improved soot handling and shear stability performance in all engines. These improvements enable engine oils licensed under the API CI-4 Plus specification to better withstand the severity of the latest low-emission engines. The CI-4 Plus standard is scheduled to take effect September 1, 2004.

"Having our premium heavy-duty engines oils meet API's new CI-4 Plus standard, along with all major industry and OEM specifications, demonstrates how ExxonMobil continues to stand at the forefront of lubricant technology," said Henrik Hansen, marketing manager - Americas, ExxonMobil Lubricants & Specialties. "With the depth of our product offerings, we can meet any of our customers' needs, regardless if they operate a brand new truck with a low-emission engine or have an older truck that they rely on."

Additional information about ExxonMobil lubricants can be found at www.exxonmobil.com.

ExxonMobil, Exxon, Mobil and Delvac are trademarks of Exxon Mobil Corporation or one of its subsidiaries.