I have a 2004 Sportsman 700. Purchased a oil change kit and it came with Demand Drive Fluid for Hub & Centralized Hilliard Clutches. I cannot figure out where this goes. Youtube videos show it going in front wheel hubs on a 500HO, but my hubs don’t look like those and I see no place for this to go on my hubs.

Any ideas or videos that can point me in the right direction?