I may have posted this before, but the Haynes is wrong on using white litium for the throttle linkages. ATF is the recomended lubricant. Sunroof rails should get lubed with the MB specific lube and not white litium either. The white litium will atrract dirt unlike the MB sunroof grease. The white litium will also tend to harden over time, again, not a big issue if you do it and check it often, but with the recommended lubricants, you can go every 15,000 miles as the manual says without worrying about it. If you check it and redo it often, you should be okay. Just an FYI.

Len