Tony...You are correct. The diesels (in my
opinion) began to decline in reliability
beginning with the 1986 model years +. MB
removed diesels from the market 1988 and
1989. The came back in 1990 with the 350SDL.
I have owned a 87 300SDL and a 91 350SDL.
Both cars were low mileage dealership cars
with perfect records. Both were much more
troublesome than my other diesels (from 85
back). I sold them;I bought a 1984 300SD
with low miles. So far in 3 years, no repair
cost. This was true with other diesels as
well (82 300SD, 78 300D, 77 240D, 75 300D).
It concerns me that MB is having more problems....as a product line.