Bill, I tried some grease from BMW that is specifically for spline use, Microlube 261 .
It's a clear lithium based grease ($16US for a 1 ounce tube) , quite sticky, I put it on the transmission input splines on the '82 LS .
Saw a posting recently about the grease and from a few people's experiences, the grease didn't hold up very well, don't know the specifics about it .
So I guess that the Honda Moly 60, is probably the way to go !!!!!