@J. Motts posted:The guy at our club (Lone Star High Railers) that does all of the maintenance on our cars and locomotives said that you don't really want a heavy weight grease on the gears as it has a tendency to harden up in the winter and then it makes the locomotive work a little harder until the grease loosens up. Good thread, good answers so far.
No heat at the club?
I'm thinking any temperature cause grease to stiffen up would be rather uncomfortable running trains.
Having said that. Read N Tacky being synthetic "shouldn't" harden.