I have had good experience with my 107 CD. I used it to understand the fuel injection system, replace the auxillary air valve, and replace all belts. I'd highly recommend it... there is bound to be some information that will allow you to be a DIY'er and pay for itself..

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Mark Herzig
1995 E300D 153K
1985 300D 142K (sold)
1979 450SL 122 miles (sold)
1992 500E 127K (sold)
1987 300SDL 132K (sold)
1986 300E 161K (sold)