When I was installing the X51 I noticed a small puddle of oil on the top of the engine. Apparently this is supposed to do this. I contacted porsche and they said that when you turn the steering wheel with the car off it causes the power steering fluid to drip out of the overflow and it is aimed at the top of the engine. One of the techs said it can be rerouted, looks like I will have to do that, maybe an oil catch can like turbo vehicles use. Just wanted to let you know this IS normal.