The proper lubricant was a GM self-leveling grease. The Deere product is a self-leveling grease; the Penrite Steering Gear/Box lube is a self-leveling grease.
Not all/many greases will "work its way around" like an oil, except for self-leveling greases.
EP-0 seems to be the modern grade for some self-leveling greases:
Castrol L/EP0
Lithium based, semi-fluid grease. Ideally suited for use in grease packed differentials and gearboxes requiring a semi-liquid, self-levelling grease.
