It really does go to show how a little preventative maintenance once a year goes a long way

 

Ford has a special grease for slip yokes. Originally they called it "Teflon Grease". Under part number D2AZ19590A.
Now it is called PTFE Lubricant. sold in two package sizes. Also useful in eliminating squeaks between plastic parts and for speedometer cables.
3 oz tube part number XG-8.
1 lb container part number XG-8-A.

 

Glad you got it apart. I'm sure that by the time you finished cleaning and lubing it up, it will work smooth for the next 50 years.

 

Well I hope I didn't make a mistake but I liberally lubed it with Anti-seize when I resembled it.

 

anti-seize is PTFE . also called pipe thread paste, also cooking pan coating ..... available at Lowes ,Amazon..............
read up
https://en.wikipedia.org/wiki/Polytetrafluoroethylene

 

The question is, will it hurt or hinder the operation of the slide yoke?

 

no , I am sure you could use bearing grease . it's just there to keep metal on metal rusting
I used High temp bearing grease when i did mine .

 

Somewhere there oughtta be a Zerk fitting, to grease the splines.

No? Or did that go away at some point? There is on my slick. If you read the manual (I know, I know, crazy talk) iirc it mentions covering the outlet on the end of the D/S, to force the chassis grease into the spline area.