Dynatex 5th Wheel Grease is a heavy-duty waterproof lubricant containing graphite and molybdenum disulfide, and is formulated to tolerate the harsh environments that a fifth wheel encounters. The high solid content forms a plating action, giving this product higher load carrying capabilities crucial in a fifth wheel application. Anti-rust and corrosion inhibitors are mixed together with the graphite, moly and thickeners, to create a product that will outlast any conventional grease. It is virtually waterproof so it won't wash off slider rails on wet roads. Provides excellent lubrication and protection in all fifth wheel applications. It's easy to use and very cost effective. Use On: All heavy-duty fifth wheel top plates, King pins, Trailer balls, Axle slides, Lug nuts, Fifth wheel slides.