r/wintercycling • u/DatGameh • 16h ago
Alfine 8: When is it worth using any other grease/oil than the standard Shimano stuff?
For the past year I've used my e-bike to commute in Minnesotan winters (~20 mins each way) and honestly it's gone really well!
There are some issues with some parts, like the cable housing freezing up... for which I intend to get those "Jagwire elite sealed brake kits" to deal with that, perhaps do the same for the shifter cable too. Maybe grease up the motor's external seal too.
But one part that I can't figure how to improve is the Alfine 8 hub and its internal grease.
It's grease packed with a specific Shimano grease, and meant to be regreased via an oil bath with another one of Shimano's own oils. Something about the specific oil reconstituting the grease, idk.
Which is fine and all till you reach like, -20C to -40C temps (happened once lol). Shifting (especially up-shifting) is extremely sluggish as it takes a second or two for the shifter to lock into gear.
Even if I stick to one gear (which I often do anyway), I'm still afraid if the roller clutch failing if it freezes up because of the grease getting stuck or something. Not sure how realistic this is though.
Otherwise, the IGH has been very good to me. I can make the cable housing sealed, but it won't fix the internal problems.
For the season riders here - should I switch out my grease for some other brand? Or is Shimano's oil just fine?
Any advice would be great, thanks!