why does my 2002 liberety spit oil when i start her up. doesnt leak when off

could be a bad seal on the oil pan? where is the leak coming from? gravity always wins so if you can not find were the leak is coming from right away, wipe the engine off really good, you know get all the gunk off, start her up for a minute or two, turn her off and follow what ever fluid you see from the bottom of the vehicle to the point of origin. It maybe a bad seal, which is super easy to fix. i mean it may cost you the seal, and if its on the oil pan, the cost of an oil change. I had this problem in my truck (2004 dodge dakota) and it only cost about 50 bucks, a can of copenhagen and a monster energy drink. The transmission was leaking. It was a simple fix and took about an hour? if that. Hell I even got dinner cook for fixing her.