Some people say a diesel is broken in at 100,000 miles. Others say 150,000 miles. A few people say 200,000 miles. At these mileages, these engines are referred to as "babies." How many miles does it take to break in a brand new diesel engine?

During the break-in period, how does one break-in a diesel engine properly? Do you try to avoid driving faster than 55 mph? Do you take it easy during acceleration (no jack-rabbit starts )? I didn't see a discussion of the break-in process in the Mercedes owner's manual.