Engine number 18-1 is at the Henry Ford Museum in Dearborn. Not in a car. Doesn’t look like it ever was in a car, but I can’t confirm that. Has a tag bolted to it that says Save for Mr. Ford.
Many guys say to bury the joint in John Deere corn head grease during initial assembly. Anything you squirt through the zerk will not really get to the joint. It basically just lubes the torque tube bell.