Preventive maintenance, avoid catastrophic failure, '82 300D

Hi,

I purchased today an '82 300D Mercedes with 150k miles for $1500, but there are no maintenance records that came with the car.
The car is running fine, but because I have no history, I prefer to assume that none of the maintenance is up to date.
Beside the obvious fluid and filter changes, WHAT ELSE I NEED TO DO TO AVOID CATASTROPHIC ENGINE FAILURES?
Is it possible to get a list or point me to one if it is already answered?

Thanks, Mike

Forums

Chassis Model Number