I have an '82 300CD, so I'm somewhat familiar with 80's mercedes diesels.
How does the 300sd differ from the 300d?
What is different between the 300sd and 300sdl?
Also, when did they first get antilock brakes?

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I suggest we solve high gas prices with environmentalists... unfortunately they don't burn well.
1982 300CD, 220K miles: This vacuum system will be the death of me yet! (OBK #26)
1977 F150 400 C6 2wd, 10.2 sec 1/8 mile with 2.75 gears.
1965 Mustang. Mostly stock... LOL!
2001 Ram 2500, cummins, 5spd, 202k miles.(girlfriends)