I use Vita Power Specialized Lubricant, 2T3501 Cup Grease, Western Auto Supply CO. "A calcium based lubricant for distributor grease cups". I do not know where I got it, and I don't know if it is still available. It looks like wheel bearing grease and could very well be just that. They had skilled marketers 60 years ago.
Carl

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission