I have never even driven a 69 220d, but I will say that having driven the 240d, 300d, and the 300 sd of the early eighties, 300 k miles isnt that big deal. If the car has minimal rust, proper maintenance records and its the original owner then it could be a very nice car. Why is he selling after having had it so long?

Realize that old diesels are relativeley slow machines. Their elegance doesnt come from their engine performance, but instead from the simplicity and longetivity of the engines.

I suggest you get a PPI by someone who is familiar with merc diesels. The car shouldnt be terribly overwhelming in terms of mechanical maintenance, but parts will be relativeley expensive. I dont know about driving in severe winter conditions with this car. I know it would have the old style glow plugs and I am not sure if it has a fuel pump heater.

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1983 300SD White with Grey interior