If you have not, join the View Navion forum on Yahoo Groups, it is quite large and active and lots of good info there. There are two forums, one is the tech forum and one is the regular forum, get on both of them and LEARN.
Also go to the Sprinter Forum and read, read, read. Get into the NCV3 section.
I have discovered that owning a Mercedes chassis is like owning an old English car, you gotta love it and learn all of its quirks and what to do when it breaks. The German logic in the design of these vehicles is very different (some leaves me scratching my head) and you need to understand it. One example is the electronic locking system on the doors, it was designed by escapees from an insane asylum, there is NO logic to its operation at all.
Do examine the maintenance records closely, the particulate filter in the exhaust system is about $4000 and the continued use of a non spec oil will clog and damage it, requiring replacement. Also since the transmission is on the weak side for this chassis, Mercedes originally spec 80K mi fluid changes, then reduced to 60K mi, and later to 40K mi. It is easy enough to change it, I will be doing mine at 20K intervals. It uses a unique fluid of which there are only a couple of choices in the US, so make sure the right fluid is/was used and the level properly set.
Charles
