I'm not sure who or where you got this bit of info, but its definitely wrong. Maybe if the quicklube place forgot the oil all together and the cam or crank seized...but the engine would have melted before that happened.A timing chain is not an end-all replacement for a timing belt. They will stretch and they will break, like everything else part-wise on a mechanical device. Fatigue happens to metal just like it happens to nylon/rubber. The incidents of this is just far lower than with belts at the same intervals. But each has its advantages and disadvantages.The best proof of this is the fact that parts suppliers carry replacement timing chains for vehicles. While the lifespan may be much higher than a belt, it still can break or stretch beyond usability. Most of the time the tensioner for the chain is what causes the problem. They break and the chain has too much slack or seizes up. The chain lubrication system may have failed and that can be deadly for those metal parts in the chain.Toyota recommended a 100K mile service (adjustment or replacement of the chain or its system components) for their old trucks with a 22R chain-driven engine. If they had belts, the recommendation would have been around 40K - 50K miles. Seems now a days the marketing department are ruling the important decisions and all that matters is getting an edge of the competition. So some idiot at Honda thought up the idea of "no service needed" on chain equipped models. That's fine for the majority of people in this country who trade off vehicles long before the part wears out. Bad for those of us who keep a vehicle a while or buy used.
