I've never seen so many rusty 5th wheels in all my trucking career. Some of them the manufactures name is visable. I don't think the self greasers are working on alot of these tractors. If they aren't greasing the 5th wheels, are they greasing tierod ends, slack ajusters and s-cams. Do yourself a favor and grease your 5th wheel by hand. If your terminal doesn't have a barrel of grease and a pallet slat suggest that one is aquired. Spring starts today but you don't want your trailer to steer your tractor, even in the rain, much less the snow. This goes for dollies also. NOTE If you grease your 5th wheel, dump your suspension and back under the trailer until your close to, but not against, the pin, then fill the suspension and hit the pin. This will put the grease on the trailer plate rather than scraping it off on the front of the trailer. Press on