This is going to be a kind of long post. In the mid seventies I always heard that japanese engines are good for 60,000 miles and then they're toast and that domestic V8s were good for at least twice that. Nobody said anything about oil. Fast forward today - I keep hearing about long lives of Toyota and Honda engines and then keep hearing about "inherent" design flaws of domestic engines. GM, Ford and Chrysler (MB) Is the engine at fault? Are imports better cared for with better oil and changes? Or did the domestic mfrs really mess up. Will oil changes really make a difference to the life of a domestic engine when all these "problems" exist? Imported engines are under much greater stress and yet they appear to last longer!