I am new here and looking for some help. I apologize for my ignorance regarding these cars. I have been a mechanic for years but have never worked on Mercedes and very few diesels in general. I am looking for a diesel Mercedes for my wife. Her commute is about 100 miles a day. I am currently looking at a 1995 E300D and a 1985 300SD are either of these a good choice? They both have about 260,000 miles. There seems to be a tremendous amount of knowledge here. What do you guys recommend? Thank You