As far as the update to the double row timing chain is Mercedes still responsible for that or would I have to pay for it. What could be the approximate cost of this? I just drove the car today and it is really nice, but it does have some small items to be repaired--new muffler, passengers side seat does not move up or back, but motor goes?! Seems like a nice car overall.

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'85 300DT--215,000 miles
'82 300DT--255,000 miles