I have a friend who is interested in a 1987 420sel. Seems to run extremley well & has recieved good care (according to the svc records). The only conern is the 188k on the odometer. How many more miles can the 4.2L v8 go with good service? Thanx 4 your input.

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1980 Mercedes 240D
1982 Mercedes 300SD
1985 Mercedes 300D
1993 Dodge Cummins Turbo Diesel