Alfine 11 is made with oil in mind . you have fill hoses to screw in..
My Rohloff uses a flushing oil that is sucked out after a while , then re oiled.. thru a hose . hypodermic
Alfine 8, is as I understand a Nexus 8 core, with a disc brake mount casing..
as far as axle bearing greasing, I have greased them on my S-A AW 3, and oiled the internals
Through axle, hollow for shift chain ...
Generalizing ; I don't have a Nexus 8, do have a Sram 9, no sticky freewheel issues...
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