Sorry to jump in on your thread OP, but I am having the exact same leak.

Everyone says diff oil should "stink" but I didn't think it smelled that bad. When I pulled the dipstick the engine oil smelled different than what ever fluid was on the ground. I just changed my oil (maybe 60 miles) so the color is very similar. Is there any way to be sure which fluid it is. Mine was also running out of the whole and along/down the bottom of the oil pan, so my first guess was leaky oil pan gasket.