Prediction of engine failure long before actual failure, so that an efficient maintenance system can be implemented. Prevention of actual failure, due to effective predictive maintenance, leading to great savings in costs arising from failures during critical use. These include: loss of output, loss of life (in military equip-ment and hospital emergency generators), loss of valuable time, and so on. Highly attractive cost/efficiency ratio of proposed service of predictive maintenance. Testing is rapid, convenient and accurate. Testing enables real-time analysis of the engine’s condition. Testing does not require the engine or any of its components to be dismantled from the unit which contain it. The product is unique. There are no other technologies currently available that can compare this technology. The main advantages of the technology proposed by Engines PdM are the prevention of reciprocating engine failure through early identification of developing faults, and the management of an optimal maintenance regime which allows analysis of the engine and its parts without stopping or dismantling the engine.