Anybody know what happened here? I've never encountered anything like this before. I literally pulled out of my driveway and this massive squealing, almost like a nail was gouging my rotor, erupted. So I turned around and took a few pics. The grease appears to be a white lithium base, but very chunky with bits of what appear to be plastic or hard rubber, but could very well be metal. The grease appears to have been thrown toward the back of the truck, as there is grease on the mud flap. Truck is a '95 Chevy K2500. Good condition, or so I thought. You can see where the grease blew out from where appears to be where the axle attaches to the wheel bearing. Here's a close up. Further away, from the front of the truck Again, from the front. This is the front diff, where it attaches to the axle. No grease film on the other side of the pumpkin, only on the side of the mishap.