I have bought a few grease nozels and have yet to find one that will fit into the fitting on my W126's hinges. I want to grease my doors I am sure they have never been done. Is their an official MB tool? I need to talk to the dealer maybe their is an official grease fitting? Anybody find something that works?

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200