Originally Posted by dieselbenz1

Ok I found my links but I'm not certain it's all factual as the majority of sale for the G wagons outside of the USA were for military and industrial users who most likely never reported problems. In short only the US vechiles with the 603.9 engines specifically, were equipped with the emissions devices which concentrated heat onto the motor mount. If not maintained a failed motor mount would cause excessive vibrations which caused some screws inside the engine to shake loose ending up blocking the oil passage causing the oval cylinder condition. Hydro locking was also an issue with the earlier heads due to failed head gaskets again causing bent rods. Both and im certain others also affected roughly 50% of these engines as reported in the US. When I get sucked in to assist viewing this vechile I now have a better idea what to look for but my major concern are the 4x4 parts cost and availability.