Detroit Diesel Announces Engine Ratings For the 2002 Series 60 Engine

    DETROIT, Sept. 17 Beginning October 1, 2002, Detroit
Diesel Corporation (DDC), and other heavy duty engine manufacturers in North
America, are required to meet new emissions standards.

    DDC announced today that it will continue to provide a full line of
ratings for the 2002 Series 60 engine.  Approximately 95% of all current
ratings will be available on October 1, 2002.  The remaining ratings will be
further developed to meet the new standards on a priority basis according to
demand.  The standard maximum engine speed will remain at 2100 rpm.

    "We have progressed significantly with the 2002 Series 60 engine
development process.  Performance and driveability are equivalent to today's
engine, and fuel economy continues to be optimized.  Depending on rating and
application, the fuel economy of 2002 Series 60 engines is now in a range of
2 to 4% less than current engines.  We still have a year of development time
in front of us.  Our goal is to continue improving fuel economy until any
difference compared to current ratings is insignificant.  Soot loading of the
lube oil, once considered by some to be a potential problem, is in line with
current production engines.  We had to do a lot of work to get where we are,
and we remain committed to do even more work to make sure the Series 60 engine
keeps all the advantages that has made it number one," said John Morelli, Vice
President - 2002 Engine Program.

    The overhead camshaft design of the Series 60 engine allows for the high
injection pressure needed to meet the new standards.  When higher injection
pressure is combined with exhaust gas recirculation and advanced turbocharger
technology, the result is a low emissions engine with excellent performance.

    DDC first began using EGR and the advanced turbo more than a year ago in
the tough, stop-and-go transit bus market.  By October 2002, approximately
3,500 of these engines will be running throughout the U.S. & Canada.

    "Thanks to the computing power of our DDEC IV System, we are now able to
regulate the output of the turbo precisely, and over a very wide operating
range.  The result is lower emissions and even better driveability than
current engines."

    "Over the past 20 years, there have been continuous concerns that engines
built to meet the ever-demanding standards would suffer losses in fuel
economy, durability or cost of operation, but when you compare today's engines
with those of 20 years ago, there really is no comparison.  Today's engines
provide much better fuel economy, and are easier to drive and maintain than
ever.  Our goal is to continue that trend with ongoing development of the
Series 60 engine," said Morelli.