I have the Mercedes 2 CD Manual set and I also bought the Printed Manuals.

The CD set is handy but no longer works correctly on My newest Computer. I also use the Free Manual Site that is based on the CD set but has a better index system.

I also use the printed Manuals.
What I have found out is that the Printed Manual have stuff that is not on the CDs or the CD based site.

Also many People prefer the Printed Manuals because the Pictures are clearer on them and of course you don't have to set in front of your Computer to do the reading. You can sit in your Lazy Boy Recliner or on the Throne and read.

Also I paid $50 plus for the CD Set before I knew it could be had for $27. I don't feel at all a chump for being it or the Printed Manuals as I was desperate for information when I firs got My Mercedes.
I also have a Mitchels CD, Mitchels Import Car Manual and Chilton import Car Manual. Every one of them has been helpful even if in only a small way.

All of them have helped to save Me Money

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84 300D, 82 Volvo 244Gl Diesel