American Power Group Receives $900,000 Order From Leading International Oil and Gas Drilling Service Company for Conversion of

American Power Group Receives $900,000 Order From Leading International Oil and 
Gas Drilling Service Company for Conversion of
Hydraulic Fracturing Pumps to Dual Fuel Operation 
Marks $2.4 Million in Dual Fuel Hydraulic Fracturing Conversion
Orders Received Since January 1st 
LYNNFIELD, MA -- (Marketwire) -- 03/12/13 --   American Power Group
Corporation (OTCQB: APGI) announced today that its subsidiary,
American Power Group, Inc. ("APG"), has received a $900,000 purchase
order from one of the top 5 oilfield and drilling service companies
in the world, to upgrade and convert diesel pumps used for hydraulic
fracturing to APG's Turbocharged Natural Gas(TM) Dual Fuel System.
APG will provide a turnkey solution inclusive of certified installer
training which will enable the customer to install subsequent
conversions. APG expects the units to be converted and operational
during the second calendar quarter. The end customer was not
disclosed for proprietary reasons.  
Lyle Jensen, CEO of American Power Group, stated, "We are pleased
that, following extensive factory and field testing, APG's innovative
Turbocharged Natural Gas(TM) System has once again been selected for
its safety, reliability, and environmental efficiency by another
world class oilfield and drilling service company. APG's
user-friendly dual fuel system provides an oil and gas service
contractor the maximum flexibility to utilize either pipeline gas,
qualified well-head gas, liquefied natural gas (LNG), or compressed
natural gas (CNG) to displace a large percentage of diesel fuel and
realize a significant net fuel savings and lower emissions. Our oil
and gas drilling customers have been experiencing paybacks ranging
from three months (well-head gas) to nine months (liquefied natural
gas), making our dual fuel solution one of the most compelling
competitive decisions they can make. At a time when global diesel
prices continue to escalate, the ability for operators to utilize our
dual fuel technology with inexpensive, clean-burning, and plentiful
domestic natural gas provides a significant competitive advantage for
those that adopt an APG dual fuel operation. This is the second major
order APG has received for dual fuel hydraulic fracturing in the past
ninety days and we expect an 
accelerating adoption of our technology
for both stationary and vehicular applications during 2013."  
About American Power Group Corporation
 American Power Group's
alternative energy subsidiary, American Power Group, Inc., provides a
cost-effective patented Turbocharged Natural Gas(TM) conversion
technology for vehicular, stationary and off-road mobile diesel
engines. American Power Group's dual fuel technology is a unique
non-invasive energy enhancement system that converts existing diesel
engines into more efficient and environmentally friendly engines that
have the flexibility to run on: (1) diesel fuel and liquefied natural
gas; (2) diesel fuel and compressed natural gas; (3) diesel fuel and
pipeline or well-head gas; and (4) diesel fuel and bio-methane, with
the flexibility to return to 100% diesel fuel operation at any time.
The proprietary technology seamlessly displaces up to 80% of the
normal diesel fuel consumption with the average displacement ranging
from 40% to 65%. The energized fuel balance is maintained with a
proprietary read-only electronic controller system ensuring the
engines operate at original equipment manufacturers' specified
temperatures and pressures. Installation on a wide variety of engine
models and end-market applications require no engine modifications
unlike the more expensive invasive fuel-injected systems in the
market. See additional information at: 
Caution Regarding Forward-Looking Statements and Opinions
 With the
exception of the historical information contained in this release,
the matters described herein contain forward-looking statements and
opinions, including, but not limited to, statements relating to new
markets, development and introduction of new products, and financial
and operating projections. These forward-looking statements and
opinions are neither promises nor guarantees, but involve risk and
uncertainties that may individually or mutually impact the matters
herein, and cause actual results, events and performance to differ
materially from such forward-looking statements and opinions. These
risk factors include, but are not limited to, results of future
operations, difficulties or delays in developing or introducing new
products and keeping them on the market, the results of future
research, lack of product demand and market acceptance for current
and future products, adverse events, product changes, the effect of
economic conditions, the impact of competitive products and pricing,
governmental regulations with respect to emissions, including whether
EPA approval will be obtained for future products and additional
applications, the results of litigation, factors affecting the
Company's future income and resulting ability to utilize its NOLs,
and/or other factors, which are detailed from time to time in the
Company's SEC reports, including the report on Form 10-K for the year
ended September 30, 2012 and the Company's quarterly reports on Form
10-Q. Readers are cautioned not to place undue reliance on these
forward-looking statements and opinions, which speak only as of the
date hereof. The Company undertakes no obligation to release publicly
the result of any revisions to these forward-looking statements and
opinions that may be made to reflect events or circumstances after
the date hereof or to reflect the occurrence of unanticipated events. 
Media Information Contact: 
Kim Doran 
Quixote Group 
Investor Relations Contacts:
Chuck Coppa
American Power Group Corporation 
John Nesbett or Jennifer Belodeau
Institutional Marketing Services (IMS)
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