I’ve tried “white” lithium grease—much easier to use, but it didn’t last any longer—and when I stripped down the winches, there was still gunk, but also there was no lube left at all on the insides of the bearing races.
Ok, as long as we’re on winch rebuilds—I have a pair of Harken self-tailing winches on my cabin top that I cannot keep functional. I tear them down, clean all the parts off (WD-40 and paper towels) get everything shiny, lube moderately with Harken winch grease on the bearings and machine oil on...