Ditto for the NAPA stocked Valvoline Palladium (3% Moly, but not synthetic) for my birfs and driveshafts, Mobil Red synthetic for the U-joints. The Palladium apparently meets all requirements for Caterpillar, etc and is used in the trucking, mining and heavy equipment industry, but it is still a NLGI 2 Lithium based grease, so we can use it. More solid lubricant (Moly) left behind if the grease gets pressed out or washed off is the idea I think. It is for sure is a deeper shiner black color than other Moly greases.
No hijack intended;
Just realized that my U-joints had not been greased for about 1 1/2 years or 35K miles !!
Somehow they got missed, always running here or there, forgot to buy the synthetic, couldn't find the synthetic a few times, etc,etc.
Well, did it today; surprisingly, when I greased the rear shaft out came the red I put in over a year ago, a bit dry, but not totally. However, out of one cap came some ? brown grease not really rusty grease, couldn't really tell. Might have been the kid at WalMart before I told him not to use regular grease.
The front shaft U-joints however were dry

, they took a lot, and about all that came out was what I had just put in. Got me worried now. Maybe that was the source of the rumble I recently started noticing first thing in the morning, ya think? We will see.
Back to the OP's thread:
How much different would Amsoil's Synthetic 3% Moly grease be from the Valvoline Palladium ie: any significant difference in protection, less rolling resistance?? I am all for synthetics when I can find them.
Thanks