Good place to add this for future searches FWIW
The FSM (Factory Service Manual) calls for a Moly (Molybdenum) fortified grease for the slip yolk. Pump grease until the shaft starts to push apart OR (too late this time) first remove the zerk fitting then pull the slip yolk out from the driveshaft before you install it to grease the splines. Be sure to mark both components to help line them up later.
FWIW one option (not required) is to coat the splines with a dry Moly coating followed by Moly grease. Another method is to brush Loctite LB 8012 Moly Paste (65% Moly) on both the slip yolk and driveshaft splines followed by a Moly grease. I also pack (some) moly grease into the slip yolk cavity before sliding the slip yolk back into the shaft
with the zerk fitting removed (any excess will come out the zerk fitting hole). Then when installing the shaft pull the slip yolk out when bolting onto the flange. Reinstall the zerk fitting, go for drive.
For the U-joints pump (grease) until fresh grease comes out of each of the four end caps of the spider. For new joints you'll first see the yellow grease come
out followed by whichever grease you're using.
Couple of photos showing a new slip yolk pulled out of the driveshaft.
Note the small amount of yellow assembly grease (I clean that out if applying Dry Moly coatings FWIW):
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Shaft/slip yolk separated, splines cleaned/degreased prior to applying a dry Moly coating. Both the CRC Dry Moly and the Molykote D-321R can be cured quicker using a heat gun set on low before adding grease and reassembling. The D-321R is the better dry coating (has a binding resin and Graphite) but also is much more expensive. Of the choices below the Moly Paste (LB 8012 in addition to grease) is the better product in this application IMO.
Neither the Dry Moly coating or the LB 8012 Moly paste in this example should be used by themselves ie: be sure to also grease the slip yolk if either are applied to the splines. Also note that none of these coatings are required by the FSM, just one (personal) method to boost the protection for a shaft that may not come apart again for a few hundred thousand miles.
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Loctite LB 8012 "Moly Paste" contains 65% Molybdenum Disulfide (same lubricant as what's in "Moly" fortified grease)
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LB 8012 Moly Lubricant (Paste) applied to the slip yolk and driveshaft splines and starting to add Moly grease to slip yolk cavity prior to reassembly
Tip: zerk fitting should be removed until shaft is reinstalled on vehicle
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