Originally Posted by mikhalit

Similar conditions here, bike is stored in an unheated garage ( just a concrete box). This winter the coldest temperatures it has experienced were like -8deg C, no performance issues. I give it an ATF bath every half a year + a bit of teflon grease, costs very little money comparing to Shimano grease and oil. So far 11+K with this hub and it works as new. I use no more than 4 gears during my rides, but it's flat here, only few 3% hills, though winds can get very strong.