During the colder weather 1st and 2nd have been 'stickier' than usual recently so I thought changing the fluid might help. While digging around I found this site that puts some Mercedes part numbers to the specification numbers listed in the owner/service manuals. The gearbox one (MB 236.2) even listed non-Mercedes equivalents . The link is Mercedes-Benz Specifications for Operating Fluids: Overview Sheets just follow the 'sheet' number to the spec you want. Hope this helps.

Edit: MB not MD, oops.