Concentrate on getting it started before you bother with the radiator, brakes etc. Put on new fuel filters, prime, glow (I think your car has the famous "gorilla knob" for activating the glow plugs) and start.

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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