Just reviving this thread cause it was all on topic and about locating a suitable product.

Recently rebuilt mine and came to the Fill stage.
Manual says:

My research said it was originally (1959 GMC maintenance manual specs) a 0 grade sulfur based grease.
Fine.
Whatever.
Unobtanium.
Check threads on the bolt.
I would have to order the Penwright and wait and well... my name infers I'm not gonna go that route on principle.
I looked for Corn head grease but I'm in one of the 999K locals in america without a JD dealer within 60 miles.
My local Not a JD dealer tractor repair shop said "Huh?"
"I'd have to order a case".
Somewhere I saw a chart that compared 0 and 00 grease as brown mustard and apple sauce. I figure anything but cooking oil or peanut butter will do so I started looking for 0 grade grease.
I started calling all the local FLAPS and even the CRAPS (cranky remote auto parts store) asking for "single or double ought grease" and even when I called back weeks later... they still didn't know or couldn't get what I was asking about, even when I said "steering box grease", they asked "Deltron?"(I exaggerate... a little)
So, Back on googoo I found a reference to Snapper something or other using a 00 grease so I called the LLMG (local lawn mower guy) and He said to come on down.
I went with a selection of Stens OO grease in the qt bottle.



Give me ambiguity
or give me something else