Tapered roller bearings.
0w40 synthetic or 15w40 conventional.
the cones on any kind of bike are the thing that holds the bearings in the front hub so it can spin they screw on the axle and they hold in the bearings and that + the cup (AKA bearing race )is what the they spin on
The cogs and bearings inside can seize and/or run hot and lose their surface treatment.
Check if you've really gotten the right kind. Check the wheel and the axle for any burrs that the bearing might be catching on.
The 2012 Mercedes-Benz Sprinter runs on diesel.
The 2010 Mercedes-Benz Sprinter runs on diesel.
The 2014 Mercedes-Benz Sprinter runs on diesel.
He is a pro sprinter.
The 2010 Mercedes-Benz Sprinter has a 5-speed shiftable automatic.
The 2013 Mercedes-Benz Sprinter runs on diesel fuel.
The 2012 Mercedes-Benz Sprinter has a 5-speed shiftable automatic.
The 2013 Mercedes-Benz Sprinter has a 5-speed shiftable automatic.