Hey guys i have a problem with my 95 runner 4wheel drive auto. For awhile my suv was making a popping noise from the rear it was almost righ inthe middle it sounded like. I didn't do anything about it because it wouldn't do it all the time. Then after awhile it started getting worse. And popping more often then now it is popping really bad and it sounds like something almost tearing in the back almost like hitting two bricks together. I bought some gear oil and put it in the diff. It was completely dry. So i filled it up and now its still doing it worse then ever. When i took it for a drive to see if it helped. Along with the popping and grinding and everything it almost sounded like a squeal a couple times? I know i did not describe it the best but it is really hard to explain it sounds like nothing i've ever heard before! Thanks in advance!!!