PIQUA, Ohio, Aug. 19, 2024 – Hartzell Propeller has expanded its preheating capabilities to offer a complete suite of engine preheat options to general aviation consumers... Spaero aims to unite ...
John Deere's two-cylinder diesel engine tractors, like the Model 70, 720, and 730, also set records for fuel efficiency. According to historical data, the Model 70, introduced in the mid-1950s, set a ...