Well, I'm not a greasy expert, but it seems to me that for wheel bearings it wouldn't really matter if you used a modern synthetic grease. If the grease is designed to lubricate metal surfaces rubbing against other metal surfaces it should work fine.

Jeff Nelson

"Beer is proof that God loves us and wants us to be happy." - Benjamin Franklin
"Always do right. This will gratify some people and astonish the rest." - Mark Twain