I've been running Chevron ultra duty for a while. It is the recommended grease for Spicer universals and it qorks well after yeas of issues with other greases. But it doesn't seem to last 4000 miles in the front spring bushings and the steering gets a bit sticky. But im sure everything else is good to go qt that point. I'm thinking of running two greases. Here's the following areas that need grease: Steering: kingpins(top and bottom), tie rods, steering shaft (2 joints plus slip joint), drag link. Ep needed. Driveline: 5 ujoints, 2 slipjoints. I plan on running ultra duty in the universals Clutch: throw out bearing that needs high temp, not sure if moly is a good idea. Two clutch fork bushings and clutch linkage. Those could use a basic grease. Brakes: each wheel end has a slack adjuster and s cam tube that needs grease. You're supposed to use polyurea but nobody does. The ultra duty tends to come out pretty clean but I'm sure a good water resistant grease would be better. Front axle: 3 on each spring. Ultra duty isn't cutting it. I'm sure a good moly grease would be best. I'm thinking of replacing everything except the universals and throw out bearing with one of the moly Schaeffer greases.