Greasing new wheel bearings and hub.

Just finishing rebuilding hubs, spindles. Cleaning them free of grease(before sandlasting) is messy, but not a pain. Gloves and varsol. I was wondering if the void should be filled. Wasnt too concerned yet as these pieces will be painted and wrapped before getting stored away. I bet there is over a cup of "empty " space for grease in there.
Grease thins out the warmer it gets and gets flung off somewhat. If that void is filled, better chance the grease stays put where it needs to be.

That being said, what's everyone recommending for front bearing grease?