oil leak in my 03 jeep grand cherokee,?

[hoot]

I have a 03 jeep grand cherokee that started leaking a few drops of oil from the bell housing inspection plate when i park it,where would it be coming from i checked the valve cover and theres no leak from there,also would high millage oil stop the small leak,it claims to stop minor leaks,its a 4.0 L only has 54.000 miles,it sits a lot between driving,thank you very much for any help you can give,i'm hopeing its not the rear motor seal, thank you, hoot