Just talking trucks here... I don't want to ruffle any feathers...
Corn head grease has been around for decades. Its never been in any CV joint, at any time, anywhere. At some point people saw the 'wet knuckle' and thought it was a design feature. It's not. Its just a byproduct of the felt seals weeping. Few, very few, kingpin bearings are splashed lubed by grease agitated by the CV joint. Every manual I have says pack the bearings before installation. While manuals may state the 'wet' knuckles are acceptable, they never say they are required.
A true grease consists of an oil and/or other fluid lubricant that is mixed with a thickener, typically a soap, to form a solid or semisolid. The oil will naturally separate from the soap little by little... THIS IS WHAT IS SEEPING ON THE THE EXPOSED KNUCKLE.
Feel free to use that corn head stuff. But since the 40's trucks have had #2 grease (aka chassis grease, bearing grease) in the hubs. All it ever really did was stop the inside from rusting.
If you check your TM, the hubs and CV joints are to be removed, cleaned, inspected, repacked, and reinstalled every 6,000 miles. And the specified grease is simply 'chassis grease'. Every 1,000 miles you are to check and refill the hubs, again, with CG.
I've taken apart more than my fair share of hubs and they are always in one of two conditions: Jam packed full of dried, hard grease, or lightly lubed on the inside. I have yet to run across anything in the middle.
