There is no service interval for the diff or transfer case oil, or the 722.6 transmission. There is no timing belt, all Mercedes have timing chains, and there is no interval on the chain either.
The dust filter (for the climate control) gets done on every "B" service. The maintenance intervals in KM's are listed in the flexible service system sheets, but I haven't memorized them. As has been stated, maybe just do the calculations manually, or here is a website with a conversion calculator:
http://www.admiralmetals.com/metric_conv.htm
Gilly
ps There is no service interval for the power steering oil either.