You can maintain your own E320 Bluetec -- I maintain mine
To reinforce what you said about the manual and use of additives in the fuel -- MB has said no additives since the early 1980's and I have been putting additives in my MB diesels since 1975 and have never had a pump fail or had to replace a fuel injector on the 9 I have owned. Also never had one of mine fail to start during the winter with temps down to just under 0 degrees F.
Thanks much. This confirms what I've suspected. Not rocket science here. The additives, in particular, Kleen Diesel, won't hurt the V-6 at all. It will keep the fuel system clean with regular usage. Probably the same or better ingredients than BG's diesel fuel treatment which the dealers put in after their rediculous A or B service, which is nothing more than a hyped oil change (check wiper blades, tire pressure, battery terminals, tire tread, brake linings, lube sunroof rails, etc., ... ad sickenum infinatum). I do all this stuff on a regular basis, no help needed, "Thank You". I've learned how to do the regular maintenance with the Star Service CD, a real plus for anyone who wants to save a bundle and likes working on their own Benz. The '08 E320 is probably a little more challenging to work on than the older model diesels just because the air intake manifold must be removed before some of these jobs can be performed, but after you've removed and replaced it the first time, you'll be able to remove/install it in minutes. I'm here to say -- you can change your own oil/filter, air filter, fuel filter, dust filter, glow plugs, and even sensors if you have the Star CD for the 211 and a little time to do the job. If you need any help, let me know. I have the Star CD.