Doing some general maintenance on my 190D 2.2L before winter really kicks in, replacing glow plugs, filters, fluids, fuel hoses and anything else that needs attention (debating whether I should replace my injectors or just the nozzles). I'm a bit concerned about the amount of rust and oxidation I'm seeing when I look under the hood. Not entirely sure what some of these things are, in particular the first two closeups. Should have time for a Pick-N-Pull run this weekend if anything here looks like it should be replaced.

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1985 190D 2.2L 717.411 5-speed
1983 300D Euro OM617.950