it was warm enough to give the bike a good scrub this afternoon - with actual LIQUID WATER - removing some of the gunk that accumulates in nooks and crannies when riding in the winter. much better. wasn't too concerned about the mud on the frame, but the drivetrain is pretty clean. WD-40 removed a LOT of rust, followed by a round of chain cleaner, then drying, and a bit of fresh oil. Runs nice and smoothly now :-)