Smelled burning oil today when I got out to open a BLM gate. Crawled underneath my Jeep, and the was differential oil on the undercarriage. I found the breather hose had pulled out of the differential, I pushed it back in. My question is, what keeps it in there, or do i need to take it in as the hose and metal piece came out? Is it supposed to be staked from the inside, or is it supposed to be RTV'd?