So just got back from a 700 mile trip and found oil underneath my car. My 2001 Grand Caravan 3.3 liter engine looks like it is leaking from the trans-axle to engine connection. My questions are: Could it be anything but the rear engine main bearing seal? If so what else. Can I check it further by taking the access plate off. Is that as easy as it looks? The car has 134,000 miles on it and wondering what else in that area should be replaced along with the seal. I assume the trans-axle needs to be removed for that service. How bad of a job is that? Thanks for the help.