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137000 miles on my 06 tribeca and she seems to be running like a champ still. just regular maintenance and belt tensioners needed their bearings replaced. I hope to do as you've done and take it well past 200k.

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As long as the tensioners on the timing chains hold up there really isn't much to go wrong on the H6. From what I've read It's built just like a 2.2, only with 2 extra cylinders. The nylon tensioners on the timing chains are the weak link. They brittle with age and fall apart. Pretty common occurance on many chain timed engines. Unfortunately it often spells disaster for the engine, and bent valves aren't cheap.

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