u-joint trouble????
It tells you there is grease coming out of your u-joint 
Make sure it is coming from the u-joint, most of the time rear end grease makes it through the splines on the pinion/yoke and gets thrown out of the yoke on the nut side. Looks like its coming from the u-joint. U-joints will spew a little, especially with a larger gear since the driveshaft is turning faster. Just squirt a little grease in the joint once in a while and make sure it isnt loose and starting to fall apart..
Make sure it is coming from the u-joint, most of the time rear end grease makes it through the splines on the pinion/yoke and gets thrown out of the yoke on the nut side. Looks like its coming from the u-joint. U-joints will spew a little, especially with a larger gear since the driveshaft is turning faster. Just squirt a little grease in the joint once in a while and make sure it isnt loose and starting to fall apart..
