Well it was a rainy day, so the 8 yards of recycled crushed aggregate sat in the driveway and I spent a few hours reading the manual that came with my tractor, loader and backhoe.
I want to gather the correct grease and as far as the loader and tractor itself go, seems like the John Deere SD Polyurea is both recommended and available.
The backhoe is another story. It is a 2018 260B. The manual recommends John Deere Moly High Temperature EP Grease. I can find John Deere HD Moly Grease, part number TY6333, which thanks to a PDF I found on this site is described as both high temperature and extreme-pressure, but isn't what the manual calls out. Is this just yet another error in the John Deere documentation? I'm pretty sure the TY6333 will do the job so unless someone can tell me otherwise, I guess I'll just get some.
One more question. In the tractor manual (1025R) under grease it lists preferred grease, and preferred lubricant. Under preferred lubricant it lists Super Lube Lubricant. Super Lube is an entire line of products by Synco, so what are they talking about?