Taking first steps on my way to own an eMTB. I do a lot of riding in winter and would like to learn how your bikes handle the challenges of winter: how much the range drops in lower temps (up to -25 celsius), deep snow riding, snow melting and getting inside the vital components and resistance to the reagent muck - this brownish stuff they use to melt snow and ice in winter, wonder if you get any problems with this stuff.