Detroit Diesel BlueTec SCR Completes 25 Million Miles of Testing, Becoming the Most Tested and Proven Emissions Reduction Technology

Pre-Production Vehicles and Revenue-Generating Customer Demonstration

Units Meet Expectations in Fuel Economy, Reliability and 2010 Emissions

Reduction Compliance at the Tailpipe



DALLAS, Tex.- During panel discussions held at the Great American

Truck Show in Dallas, Detroit Diesel Corporation announced its

BlueTec(r) emissions technology completed 25 million miles of testing

ahead of schedule. By its rollout on January 1, 2010, the Detroit

Diesel BlueTec technology will surpass 28 million miles of testing,

making it one of the most proven and tested emissions reduction

technologies ever.



Detroit Diesel's BlueTec emissions technology - a North American version

of Daimler's widely acclaimed technology - represents the company's

latest innovation in clean diesel engine technology to be

fully-developed and commercialized.



"We are pleased to have taken full advantage of our early choice of SCR

as the best technology for our customers for 2010. The 2010 BlueTec

technology will be one of most extensively tested emissions technology

systems in our company's history, and having this decade of experience

has allowed Detroit Diesel and Daimler Trucks North America to not only

have an extended period of time for system design and performance

refinement but also to gain significant testing and validation

experience," said David Siler, director of marketing, Detroit Diesel.



"The early commitment to the technology allowed us to finalize our

production-intent designs early and to conclusively demonstrate the

performance, durability, and effectiveness of our BlueTec technology on

production designs over the extended life-cycle demands of our

customers," he added.



BlueTec will incorporate the enhanced performance of Detroit Diesel's

recently introduced DD15(tm), DD13(tm) and DD16(tm) big bore engines, as

well as the already proven ACRS(tm) fuel system and an integrated

engine-compression brake. Detroit Diesel's BlueTec technology includes

a unique 1-Box(tm) packaging design optimized for low back-pressure and

an all-new, robust DPF material. The BlueTec aftertreatment system will

utilize diesel exhaust fluid (DEF) and has been fully optimized for low

emissions and high fuel economy.



"We are meeting our program goals for performance and emissions, fuel

economy, durability, and reliability. Our current projections are

showing up to 5% diesel fuel economy improvement, and up to 3% net

improvement with our BlueTec equipped engines compared to today's

engines," said Rakesh Aneja, EPA 2010 program manager, Detroit Diesel.

"In cooperation with our vehicle colleagues at Daimler Trucks North

America, we have had the opportunity to test our 2010 BlueTec system

under diverse ambient and environmental conditions, operating conditions

and routes. The results of our validation testing meet our expectations

and offer a shift from fuel penalties to fuel economies for our

customers in 2010, with simultaneous reduction of emissions and CO2,

compared to today's EGR-only vehicles."



SCR Is the Technology of Choice for North America BlueTec symbolizes

Daimler's commitment to meet today's environmental challenges, while

also offering exemplary performance and fuel economy. Since adapting the

technology in early 2005, Daimler Trucks has delivered more than 200,000

trucks and buses around the world utilizing BlueTec.



"Recent studies show the rest of the North American truck and engine

marketplace of truck fleets understand and prefer the benefits we saw

several years ago. Once they have the facts, they favor SCR technology

two to one as their choice to competitively meet the EPA 2010 emissions

targets," said Siler. "It was only a matter of time before customers

would demand improved fuel economy as well as clean emissions. SCR is

the only proven technology that offers both."



"Nearly 100 percent of all big bore engines in production today for the

U.S. and Canada that will be manufactured after January 1, 2010, will

utilize SCR technology," said Siler. Detroit Diesel's BlueTec

technology is modular and will be flexible for use in over the road and

vocational applications, making it not only cost effective but simple

and highly adaptable to a range of operating conditions.



Detroit Diesel Corporation is a leading manufacturer of on-highway

heavy-duty diesel engines for the commercial truck market. Headquartered

in Redford, Mich., Detroit Diesel is engaged in the design, manufacture,

sale and service of these products, in addition to supporting

alternative and hybrid engine strategies for the commercial truck

marketplace. Detroit Diesel is a Daimler company, the world's leading

commercial vehicle manufacturer.

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