AK Brownwrote a review of Dumonde Tech Freehub Oil on August 14, 2013
This if a fab lube for Snowbike/Fatbike for those that ride in the snow and ice of winter.
Have not and most likely never ride in -40 degree temps, but freezing temps I have never experienced an engagement issue. A needed lube for the tool box.
Oh yeah, works good in cable housings