With the relocation of tractor manufacturing to Munich in 1955, the transition to the M-process for engines begins. Following Diesel's principle that only direct injection is economical, MAN ushers in a new era in the construction of vehicle diesel engines. MAN expands its tractor offerings, ranging from the 14 HP 2F1 for small operations to the 60 HP 4T1 for the heaviest tasks. In 1960, MAN creates a new type of tractor, the grassland tractor: all-wheel drive, a low center of gravity, and still good ground clearance for safe work on slopes that no combine harvester can access anymore. In 1963, MAN hands over its tractor production to Porsche Diesel. The production of MAN tractors ends in 1963. However, with built-in engines, MAN remains connected to agriculture in both East and West. Since 1967, engines based on the MAN M-process have been used in standard tractors in the GDR. Schlüter and Fendt rely on MAN engines.