Was it engine oil or trans oil? If it's coming out of the clutch area, it could be either so knowing which it is, is the first clue. It could also be fluid from the throw out bearing because in your car (i'm assuming it's the vr6 6 speed combo) is combined with the slave cylinder. So if that is leaking, that would explain the clutch slipping. So, you have 3 different fluids to choose from. Figure that out and get back to the forum.