I just posted on the other thread, corn head is made from one type of base, cotton picker is a different type of base. They use the cotton picker base because it's easy to wash out of the cotton at the mills. Cotten spindles run faster so a thinner base is needed, but both are semi liquid greases that flow under a load, and settle when parked.
A steering box is not a rotating spindle or rotating gear box like what the greases are designed for. A steering box is not loaded down for extended periods of time, I doubt it has much load at all compared to what the greases being discussed are designed for. Corn head was brought up this site probably 20 years ago, thats when I switched mine over.
I'am in the category that any 0 or 00 grease that flows is better than gun grease or a liquid gear oil thats going to run out. The brake shop here in town thats been around since the 50's used gear oil and gun grease mixed about 50/50 for steering boxes, if it came back with a leak, they added more grease to slow it down. I was semi related to the owner till he passed away, his son now runs the shop.
Probably 50% of a steering box life is just holding the worn shaft straight, no real turning involved other than minor corrections. Mine is 86 years old with who knows how many different lubricants it has had, it still adjusted up to spec's and drive great, so I don't think the corn head grease is going to hurt it. My main concern is to have the bearings and roller balls covered in lubricant to keep from rusting, and being close to the exhaust pipe keeps it warm and probably flowing better.
With old who knows what type of grease, adding some liquid gear oil will help liquify what in it, so when the time comes to clean it out, it may actually flow out. Worst case is, the gears get some lubrication even if the old stuff is solidified.
