History of the diesel car developments (Mercedes-Benz, BMW, Peugeot/Citroën, Fiat, Alfa Romeo, Volkswagen Group) There were also small diesel engines produced in England by British Leyland and Perkins. For reasons of economy the petrol BMC "B" series engine was dieselised and produced in capacities of 1.5 and 1.8 litres. Perkins produced the 4.99, 4.107 and 4.108 engines all of which were extremely reliable. Later BL produced the five main bearing "O" series engine which was extremely strong. Petrol turbo variants could make 200HP and the engine was ideal for converting to a diesel. In fact, the 1988 Austin-Rover MDi unit (also known as the 'Perkins
Marmon Motor Car Company single-seater "monoposto" construction layout. While the Marmon Company discontinued auto production, they continued to manufacture components for other auto manufacturers and manufactured trucks. When the Great Depression drastically reduced the luxury car market, the Marmon Car Company joined forces with Colonel Arthur Herrington, an ex-military engineer involved in the design of all-wheel drive vehicles. The new company was called Marmon-Herrington. Marmon-Herrington got off to a successful start by procuring contracts for military aircraft refueling trucks, 4x4 chassis for towing light weaponry, commercial aircraft refueling trucks, and an order from the Iraqi Pipeline Company for what were the largest trucks ever