Caso, back in the day, bout 55 years ago I was working in a
Chevrolet dealer ship. Started out as the greaser and we topped
of the steering gears with the same thing we used in the manual
transmissions and rear ends, hypoid grease.
Today I've been using the Penrite even though it's a bit pricy.
I've done slump testing on a bunch of lubricants including the
JD corn head grease, which is about the same consistency as the
Penrite.
http://www.pbase.com/dennygraham/image/115320139And as per the link that Tiny posted, it's available on line.
Lots of choices, just don't make the mistake of shooting chassis
grease in there.
Denny Graham
Sandwich, IL
And the sites screwed up so I can't edit my replies
anymore or post hyper links!!!!!!!!!