Torn blue plastic coating on driveline splines

Plastic coating is torn on my rear driveline’s splines. It’s made it extremely difficult for it to slide. What to do?

 

.

 

We run them as long as they do not have excessive side play.

 

The best thing to do would be have the old one cut off and then to have a new stub shaft welded on to the end.

 

I took mine apart and put in fresh grease to make sure it didn’t seize.

 

That blue coating is basically like teflon but heavier if it’s torn it’s because there is excessive wear in the splines
You have 2 options 1 grease or anti seize the slip joint and run it till it tears things up which might be next week or 10 years
2 replace slip joints now