Some people use straight John Deere Cornhead grease.

Others mix cornhead grease in a 50/50 ratio with 90 weight mineral oil (available from tractor supply listed as Ford tractor transmission fluid - it's also the recommended oil for your transmission)

Read this:

https://www.stovebolt.com/ubbthreads/ubbthreads.php/topics/1408894/steering-box-lube.html


1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)