Lubrication is usually done with only a thin film of lubricant and 5th Wheels are no exception. No matter how much grease you pile on a 5th wheel, only a thin film remains after the weight of a trailer settles on it. So why not put on a thin film to start. Lucas 5th Wheel & Slider Lube is a clean, inexpensive alternative to grease. It has a film strength many times stronger than grease. It is slicker than grease, and it?s waterproof. Since it is not a grease, it will not leave gooey soap behind after the lubricant is exhausted. This performance feature will help minimize maintenance issues in the lock mechanisms associated with the crusty, cruddy soap remaining in the system. Snip the tip on the 16 oz. bottle and string over the dry spot on the 5th Wheel. On slider rails, squeeze the bottle as you drag the tip down the slider rail. One thin string is all that is necessary. Move the trailer back and forth on the slider rail to spread the lube. This should provide months of easy sliding. Remember... dry 5th wheels are a major cause of front tire wear, front end wear, spring bushing wear and jack-knifing.