Does the car have auto or manual transmission? If its an auto it's worth checking that the oil is not from a leaking heat exchanger in the radiator - they do fail. A check of the trans fluid will confirm. Any sign of milkiness on the dipstick is bad news.

Adrian

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90 300TE 24v (M104 eng) 207K miles
87 300TE (M103 eng) 269K miles (and never had the head off!)
86 300TE (M103 eng) 230K+ miles (donor car)
95 Toyota Lucida diesel 4wd
86 200T 165K miles (sold)