Barry
A pre purchase inspection by someone who knows is helpful at times.
Previous one was 68K. Do you have service records for your car? In some discussion I remember reading it might be related to bad lubrication, MB recommending oil change every 10K which is kind of too long especially for diesels.
Agreed with suggestion to get second opinion.
Contact MB corporate see if they can hep with repair cost reduction. Its defiantly design issue.
I have 57K on mine, and Im getting worry about all possible issues which starts after warranty is over
Keep us posted and good luck.



