Record Vehicular Dual Fuel Conversion Order Month for WheelTime Network

LYNNFIELD, MA--(Marketwired - May 28, 2014) - American Power Group Corporation (OTCQB: APGI) announced their network of WheelTime dealers had a record order month for American Power Group's ("APG") V5000 Dual Fuel Turbocharged® Natural Gas Systems. The following order activity is highlighted by the applicable WheelTime Dealer Member company.

Clarke Power Services, Inc. received a follow-on order for twenty APG Dual Fuel Gliders™ from a food-grade bulk hauling customer who had initially purchased ten dual fuel gliders in March for evaluation purposes. Net fuel savings and the lighter weight of a glider were the key economic drivers for what is now the largest APG dual fuel fleet on the road at thirty Class 8 trucks. Additionally, Clarke Power has booked an evaluation order for conversion of two Class 8 trucks for one of the top twenty For-Hire Carriers in the U.S. According to 2013 Transport Topics Top 100 For Hire Carrier survey this carrier operates over 3,500 vehicles in the U.S. These two orders will be filled from Clarke Power's existing dual fuel systems inventory and as a result we expect a restocking order in the near future. Clarke Power also has outstanding quotes with another four of the top-twenty for-hire fleets who collectively operate in excess of 27,000 trucks per the 2013 Transport Topics Top 100 For Hire Carrier survey. 

United Engines LLC is working in collaboration with APG who received an initial evaluation order for nine APG dual fuel systems from a high-profile, family owned food service customer located in Oklahoma. This new anchor customer will help open up a region offering some of the lowest natural gas prices in the United States. APG will coordinate all aspects of this approximate $290,000 conversion order with United Engines. We expect to complete the conversion of five trucks during the June quarter and provide systems for four new Freightliner APG Dual Fuel Gliders™ during our fourth quarter. 

Penn Commercial Vehicle Solutions has booked an initial evaluation order for five APG dual fuel systems with a large regional textile services company in Pennsylvania. The order will target conversion of 2007-2009 model year trucks in their fleet and will be filled from Penn Commercial's existing dual fuel systems inventory and as a result we expect a restocking order in the near future.

Interstate Power Systems has received a follow-on order for four APG Dual Fuel Gliders™ from a Freightliner dealer who purchased its initial dual fuel glider in April. The dealer specializes in glider kits and is primarily focused on heavy-duty Class 8 trucks servicing the oil & gas exploration and production industry which reportedly has 190,000 heavy-duty trucks operating on a daily basis in North America.

Lyle Jensen, American Power Group Corporation's Chief Executive Officer, stated, "We are pleased to see the WheelTime Dealer Network open up new regions in Pennsylvania and Oklahoma where there has been strong state support for the expansion of natural gas vehicles. The diversity of end markets and the wide range of model years being converted continue to demonstrate the universal application of APG's Dual Fuel Turbocharged® technology."

Mr. Jensen further stated, "One of the more exciting emerging trends we see is the success our 2014/2015 APG Dual Fuel Glider™ is having in side by side customer evaluation tests with dedicated natural gas engines. The Series 60 12.7L APG dual fuel glider is outperforming and experiencing less maintenance downtime then their dedicated natural gas engine counterpart. We have always believed our dual fuel system was going to be more than just a transition technology to dedicated natural gas engines and early indications are showing the APG Dual Fuel Glider™ is becoming an alternative mainstream natural gas vehicular choice for the Class 8 trucking industry. As of today, we have an industry leading 453 EPA OUL approvals covering six of the top seven engines on the road and have shipped over 250 vehicular dual fuel vehicular conversion systems in North America and over 150 internationally."

About WheelTime Network LLC
Celebrating its 10th year of service innovation and quality in 2014, WheelTime is North America's largest dedicated service and parts network for Quality Truck Care. Established in 2004 as a strategic alliance among all North American Detroit Diesel-Allison distributors, the founding goal of the WheelTime Network was to adopt and implement a common set of quality metrics that would help members monitor and continually enhance specific service performance criteria as defined by their customers. Each WheelTime member is an equity owner in the Network and has a vested interest in achieving WheelTime's exclusive truck repair service metrics and standards. Over $13 million in systems and staffing resources has been invested by the 18 member Network to create and manage systems and metrics that enhance repair quality, service consistency and customer satisfaction on all makes of truck repairs. In addition to more than 30 training facilities and more than 200 service centers located across the U.S., Canada and Australia, WheelTime members also offer mobile repair services and on-site truck care through more than 1,500 service vehicles. WheelTime strives to be easy to do business with while remaining focused on speed and customer priorities as it drives toward delivery of a consistent experience everywhere.

WheelTime has begun development of a prototype program with select fleet customers to redefine the boundaries of readily achievable average fuel economy through system optimization, driver and technician training and the use of off-the-shelf products that include APG dual-fuel technology. 

The WheelTime "No Limits" fuel economy initiative will look at the following:
* Optimized use of APG's Dual Fuel Technology 
* Advanced APG Dual Fuel Glider Utilization 
* Route and Fuel Tank Optimization  
* Driver Education & Incentives
* Use of Real-World Fleet For-Hire Applications
* Benchmarking, Measurement and Continuous Improvement

For more information about WheelTime, or to find the nearest service location, log on to: www.wheeltime.com.

About American Power Group Corporation
American Power Group's alternative energy subsidiary, American Power Group, Inc., provides a cost-effective patented Turbocharged Natural Gas™ 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 75% 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: www.americanpowergroupinc.com.

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, the fact that our dual fuel conversion business has lost money in the last five consecutive fiscal years, the risk that we may require additional financing to grow our business, the fact that we rely on third parties to manufacture, distribute and install our products, we may encounter difficulties or delays in developing or introducing new products and keeping them on the market, we may encounter lack of product demand and market acceptance for current and future products, we may encounter adverse events economic conditions, we operate in a competitive market and may experience pricing and other competitive pressures, we are dependent on governmental regulations with respect to emissions, including whether EPA approval will be obtained for future products and additional applications, the risk that we may not be able to protect our intellectual property rights, factors affecting the Company's future income and resulting ability to utilize its NOLs, the fact that our stock is thinly traded and our stock price may be volatile, the fact that we have preferred stock outstanding with substantial preferences over our common stock, the fact that the conversion of the preferred stock and the exercise of stock options and warrants will cause dilution to our shareholders, the fact that we incur substantial costs to operate as a public reporting company and other factors that 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, 2013 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.