I noticed this on there. Do you take this as this is their procedure for lubing the u-joints, or that this is the procedure we should use before install.

"Spicer Life Series® or SPL® heavy-duty, SF U-joint kits (SPL170-SF, SPL250-SF & SPL350 SFX) are supplied with a pre-determined amount of Spicer synthetic grease,which must be added to the journal cross reservior and bearing caps prior to assembly into the driveshaft yokes. Procedure: Fill each journal cross reservior with grease. Wipe the remaining grease, into each bearing cap, filling the cavities between the needle bearings. Wipe a liberal amount of grease on the bottom of each bearing. - See more at: http://spicerparts.com/resources/lube-torque-specs#sthash.qi3pxfic.dpuf"

 

^ Those joints we do not use on a jeep..

 

Yup what he said.

As for my experience, I've had two different sets of u joints that I had to add grease cause they lacked some. Caps didn't break off, hence the add a smidge. Check your joints for proper lubrication. If they look good and spin smoothly, then leave well enough alone.