American Power Group delivers alternative fuel solutions to the heavy-duty truck and high-horsepower stationary power generation industries. Dual Fuel technology is the simultaneous combustion of two fuels. In the case of APG’s Turbocharged Natural Gas® Dual Fuel System, natural gas is used in conjunction with diesel fuel to power the engine. After the conversion, the engine can operate on either a mixture of diesel fuel and natural gas or on 100% diesel fuel.