Hello All,
I thought this might be of interest and possibly get a critique from the group.

Best wishes,

Tim

STAMFORD, Conn. --(Business Wire)-- Dec. 21, 2004 -- Clean Diesel Technologies 
Inc. (CDT) (OTCBB:CDTI) (AIM:CDT)(AIM:CDTS) announced
today tests results showing CDT's Cleaner Burning Biodiesel(TM) fuel blends 
used with the Platinum Plus(R) fuel borne catalyst (FBC)
and a lightly catalyzed diesel oxidation catalyst (DOC) produced emission 
reductions of 51 percent particulates (PM) and 9 percent
NOx versus baseline emissions from standard No. 2D fuel. The testing of CDT's 
biodiesel fuel blends were completed at Southwest
Research Institute (SwRI) in San Antonio.


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[December 21, 2004]

Clean Diesel Technologies Reports Biodiesel Emission Reductions of 9 Percent 
NOx and 51 Percent Particulates; Cleaner Burning
Biodiesel with Platinum Plus

STAMFORD, Conn. --(Business Wire)-- Dec. 21, 2004 -- Clean Diesel Technologies 
Inc. (CDT) (OTCBB:CDTI) (AIM:CDT)(AIM:CDTS) announced
today tests results showing CDT's Cleaner Burning Biodiesel(TM) fuel blends 
used with the Platinum Plus(R) fuel borne catalyst (FBC)
and a lightly catalyzed diesel oxidation catalyst (DOC) produced emission 
reductions of 51 percent particulates (PM) and 9 percent
NOx versus baseline emissions from standard No. 2D fuel. The testing of CDT's 
biodiesel fuel blends were completed at Southwest
Research Institute (SwRI) in San Antonio.



"This combination represents a reduction of over 100 lbs. per year of regulated 
pollutants from a typical school bus and over 200
lbs. per year for a local delivery vehicle," said President and COO James 
Valentine. "In addition to the more than 50 percent
reduction in toxic particulates, the most significant finding was the 9 percent 
reduction in NOx; typical biodiesel blends can
increase NOx by two to four percent," Valentine added.

Testing was conducted over triplicate federal transient test cycles on a 1995 
Navistar DT-466 engine typical of school bus, beverage
and local delivery service fleets. In the first of two test sequences, a blend 
of 20 percent biodiesel was combined with commercial
ultra-low sulfur diesel (ULSD) and the Platinum Plus FBC, and the engine was 
equipped with a lightly catalyzed DOC. Overall emission
reductions were 66 percent HC, 63 percent CO, 9 percent NOx, 51 percent PM and 
95 percent SOx. Reductions of over 60 percent were
also found in the NO2 fraction of exhaust which is a strong lung irritant and 
can increase with traditional heavily catalyzed
aftertreatment devices. CDT's approach uses a lightly catalyzed DOC which 
reduces cost and minimizes NO2 formation.

In a second test sequence, a blend of 20 percent biodiesel with commercial No. 
1D kerosene fuel and the FBC provided emission
reductions of four percent NOx and 35 percent PM when the fuel was used alone 
without any aftertreatment.

In areas where ULSD is not yet available, the option of making Cleaner Burning 
Biodiesel fuel blends using commercial No. 1D and the
Platinum Plus FBC should be attractive to fuel marketers and end users. CDT 
will provide blending instructions and the Platinum Plus
FBC to qualified fuel marketers interested in blending licenses. DOCs can be 
purchased from CDT or other established aftertreatment
suppliers.

"These tests confirm our earlier SwRI test work on engines from Cummins and 
Detroit Diesel, which showed the ability of Cleaner
Burning Biodiesel blends made with Platinum Plus FBC and No. 1D or ULSD to 
reduce NOx and PM emissions consistently. CDT recently
received a patent on Cleaner Burning Biodiesel blends in the United Kingdom, 
and other U.S. and international patents are issued and
pending," added Valentine.

About Clean Diesel Technologies Inc.

Clean Diesel Technologies Inc. is a specialty chemical company with patented 
products that reduce emissions from diesel engines
while simultaneously improving fuel economy and power. Products include 
Platinum Plus(R) fuel catalysts, the Platinum Plus Purifier
System, and the ARIS(R) 2000 urea injection systems for selective catalytic 
reduction of NOx. Platinum Plus and ARIS are registered
trademarks of Clean Diesel Technologies Inc. For more information, visit CDT at 
www.cdti.com or contact the company directly.

Certain statements in this news release constitute "forward-looking statements" 
within the meaning of the Private Securities
Litigation Reform Act of 1995. Such forward-looking statements involve known or 
unknown risks, including those detailed in the
company's filings with the Securities and Exchange Commission, uncertainties 
and other factors which may cause the actual results,
performance or achievements of the company, or industry results, to be 
materially different from any future results, performance or
achievements expressed or implied by such forward-looking statements. Readers 
are cautioned not to place undue reliance on these
forward-looking statements, which speak only as of the date hereof.

Source: http://www.tmcnet.com/usubmit/2004/Dec/1103190.htm

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