Back in feb, in the worst of the snow I cycled in 3 days on the trot. Weather got better (and roads slushier) - so back on the train, didn't touch the mtb for 3 or 4 weeks after I'd lobbed in the garage. When I went back to it there was rust on chainrings (which I'd never seen , tho' it used to be mollycoddled under the stairs), rust on the disk rotors, gear cables, chain was a bit of a mess (tho' cleaned up) and the rear disk caliper had siezed
Yesterday the cables got a going over of wd40, this morning some finishline xc chain lub for good measure. I suspect half the probelm was when I did a shorter commute regardless of weather the cables/chainrings/mech got a regular spray/cleaning with WD40 plus lube when I got in - now it get used less there's less oily stuff hanging around to protect it.
I'll certainly be washing it at the weekend !