Here is one grease that looks good: Lucas X-TRA HEAVY DUTY GREASE.

https://www.amazon.com/Lucas-Oil-103...vy+duty+grease

What seems different: not a lithium base - polyurea base. Meaning it lasts longer. "Maintains a constant film of protection even under irregular maintenance schedules" and "lasts two to four times longer" (Lucas also makes lithium greases, among others, so the claim has more credibility than it would if they didn't. And it can also be independently confirmed).

It is also a "shear stable" polyurea, meaning it is compatible with lithium greases.

Lithium greases thicken more quickly over time. Polyurea, for some people at least, would last longer and not require as frequent replacement. For these people, it would extend maintenance intervals.

Would like to hear what others have found, and any references to good information comparing different greases.