It took a while, but I found a good source of help. The best resource I found isn't really a website at all, but people who will answer a phone call. The Colorado Biodiesel group offers free (using Skype) telephone support for biodiesel users, mechanics & Mercedes diesel owners anywhere in the world. The Colorado Biodiesel group seems to have a lot of experience with Mercedes biodiesel, as they offer specialty diesel maintenance, repair and restoration on Mercedes diesel vehicles. Anyone have any experience with them?
Also, if you've got any other tips for Mercedes biodieselers, let us know in the comments.
[Source: Colorado Biodiesel]