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@Thrustvector
There's an epic thread about Alfine (& Nexus) maintenance somewhere on the Cycling UK (CTC as was) forums by the user 'Brucey'. He's a walking encyclopedia on IGHs, and AFAIK a retired materials scientist who likes mucking about with bikea. IIRC he reckons the stock lubricant isn't mobile enough; his recommendation was to add 25 ccs gear oil and run it for a couple of months, which should loosen up what's inside, and then switch to using a semi-fluid grease with corrosion inhibitors and EP additives; something like Land Rover swivel grease should work.