Yesterday, I took apart my Dana 60 front to put on the new boots. They have been in there for a couple of years now. I noticed the inner axle shafts were really rusty. I'm sure someone has done this before but I cleaned them up and sanded them down and gave them a coat of good primer. I'm going to start to do this to all of ours from now on. Yeah, I'm glad I did this, we noticed the ring gear bolts came loose and wrecked the ring & pinion.