Just for the record, THIS past thread just mentions repacking these with 'Energrease'.
Which is just the generic BP brand for their greases - I'd say any general purpose automotive NLGI#2 lithium 'chassis grease' will be fine. Use a moly [MoS2] enhanced grade if you like, but it's probably not necessary.
Cheers, Gadge
"ODK Mods can explain it to you, but they can't understand it for you..."
"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."