A couple days ago I noticed about a quarter sized oil spot on the floor of the garage, seems to drop about a quarter size overnight. Today I got around to taking a look underneath and it looks as though the oil is leaking from the bottom of the front differential. Is there a seal that can be replaced in there? When I have a little more time I am going to get a rag and clean the whole area to make sure it is leaking from that bottom piece. But, at first glance it appears the oil is just on the bottom. Could this also be the source of some front end noise that I get when making a turn at slow speed? Thanks.