i see a list of approved oils here and there including aero1010
and tellus15 etc...
in trying to hunt these down i came across a milspec same rated oil called royco756a seems to be somewhat easier to find off the shelf
what say you mercedez masters?

Don't know about aircraft etc oils but the official MB fluid is ZH-M hydraulic oil, made by Febi. Your nearest dealership should have it in their own bottle, but here in old Europe I can get the Febi bottle for cheaper.

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1993 320TE M104
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past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
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"music and women I cannot but give way to, whatever my business" -Pepys

I picked up several quarts of the official stuff at the dealer and seems the price was reasonable.