I was wondering if anybody uses a Lube Locker diff gasket? I used to have them on one of my Jeeps, but I don't remember how well they sealed. Also, as often as I had to drain those diffs due to being in mud, water, etc... I don't know if I would have even noticed them if they had a slow leak. So, should I worry about such a thing, or just go with the trusty old RTV?