The Valvoline product I use is also rated for U-joint applications. I posted the link above. I have been using in in u-joints and the driveshaft slip joint.
I also prefer to just buy one product if possible.
Speski OffRoad LTD, Cargo Solutions for Toyota 4x4's http://www.SpeskiOffRoad.com
"80 series, with a fridge"
1976 FJ40, Project with little progress.
2004 Starcraft 10RT