The Mitsubishi Fuso Super Great has used several important heavy-duty diesel engines across its generations, but buyers should not rank them with simple claims such as “6R10 is best for fuel economy” or “6M70 is the most durable.” Real performance depends on the truck's model code, engine specification, gross vehicle weight, body type, transmission, route, maintenance history and destination-country support. For Japanese used-truck buyers, the most important Super Great engines include the older 6D40 and 8M-series engines, the widely used 6M70, the later 6R10, and the newer 6R20, 6S10 and 6R30. The current Japanese Super Great represents another major step ...
