Thanks! I have an owner's manual, actually. Oh you're right, it does mention how much fluid is required for each fluid.

I even have the factory manual that came on a DVD for $50. It doesn't go through the actual steps for doing a lot of this stuff. For example, I spoke to a guy at Autozone about how to change the coolant (zerex g-05, as TheDon said). He said to put a whole thing of coolant in there (didn't say how much that was) then fill the rest with water. Turn the engine on, wait for it to drain and keep adding more water until it stops draining. Is this accurate?

I could really use a diagram of everything under the hood. I took a bunch of pictures, I might just post them, labeling everything I know, and maybe someone can help with the rest.

A bigger newbie task
I'm also going to be replacing the glow plugs (pencil type). I did the whole diagnostic that everyone talked about. The relay works, the light on the dash works, the fuse is in perfect shape, the battery is excellent, the continuity all checks out, and the plugs have low (under .7 ohms) resistance.

But still the dash light doesn't come on, so I'm replacing the plugs. I found some OEM plugs at Autozone for less than $10 each. Couldn't find a reamer, but I could just use pipe cleaners (?). People on these forums talked about how removing the fuel lines helps, but I don't want to assume I know where those are, or what/how to remove them. Is it pretty simple to remove them? Can I just pop them off and pop them back on?

It's disappointing that the manual doesn't mention anything about this, and I haven't found any detailed descriptions on how it's done.

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1985 300d Turbo, 274k miles
my first and only car