Originally Posted by Mody n Domy
I have a 2008 Workhorse W-22 with about 38,000 miles. At what point should the oil be changed in the front hubs?
If you decide to replace the bearing lubricant, the screw cap is intended to be the drain and rotating the wheel to align it at the bottom will achieve the best results. To refill, remove the rubber plug in the center of the seal and add fluid to the bottom of that hole. Wait a while for the oil to level itself and add as needed. Replace the rubber plug. This method will prevent you from over-filling, which WILL create a sticky mess when the oil heats up and starts weeping out around the rubber plug.
FWIW, I have more miles on my 2009 W-24 and have no plans to replace the fluid.