Please dont buy barrett's book! As a buyers guide that book is an utter failure - mistakes galore and some models are barely mentioned. At one point Barrett states that 450sel's dont rust....model years are confused and he writes off the 116 300sd in a rather rude way. This clown better keep his day job.

I realize that rant doesn't help you in your search, so here is a search method I would use: search all the forums at the same time, while searching titles only, and start with threads which had the most replies. This should make things go a little quicker.

Tell us what you find. Mike

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E