Make sure you are getting all 67 HP...change the fuel filters, time the injection pump, adjust the valves, check your timing chain stretch and install offset key or new chain if necessary.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine