i took the wheel off again, and pushed/pulled on the hub and it seems tight, doesnt move towards or away from the other rear wheel. the bolt seems to be in place as well.
i guess its something actually in the axle? is there any way to grease the parts rather than replacing the whole thing? i sprayed a bunch of DW40 on that joint and was able to drive 5min away from the house to run an errand without the screech , but im sure WD40 wont last long on there...

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1981 240D ... 265k
1977 240D ... 265k
1977 240D ... 250k