I bought a tube of the Green Grease several months ago for packing the wheel bearings of my sub-1000 pound utility trailer. (It's 8 by 10 feet I think in size, but does have 3500 pound rated axles with tapered roller bearings in the Timken style) Reason I bought it was that it was about a buck or two cheaper than the Valvoline Synpower full synthetic and that the packaging made a big deal about it being waterproof, something that I thought was probably a good thing for a trailer that sits outside in the elements. Both tubes had the same NGLI ratings. I'd bet that the Valvolene is just as weather resistant.
Interestingly, the color and consistency were very, very similar to an old tube of fully synthetic Castrol grease I'd bought nearly ten years ago. This old Castrol synthetic grease was good stuff.
The consistency was not quite as buttery as say white lithium grease, and didn't seem stringy or tacky like, for instance, Lucas Red-n-Tacky grease.
The trailer has seen several 50 mile plus test runs since using the green grease, with no perceptible temperature rise on the hubs. Initially, the wheels were very stuff and didn't rotate as freely as they had with the old, nasty grease in there, but after a 50 mile test run, they were back to normal. Just the other day, I had to move the trailer to mow what's left of our lawn (extreme drought here) and I moved the trailer easily by hand, something that used to be hard to do before the repack and the test run.
later,
ben