4 Wheel Drive/SUVs: 93 Ford Explorer Oil Leak, oil level, oil leak

Question
I have an oil leak at first I thought it was coming from this little tube at the bottom and blowing back onto my manifold. I put a piece of hose on it so that it would drip straight to the ground to eliminate that. A whole bunch of oil leaked out today never seen that b4, my oil pressure didn't change and neither did the oil level on my dipstick. The valve cover has leaked b4 but its not wet or any residue on it at all. Since the big spill no big issue but oil only smokes off of manifold during stop and go traffic, on the highway its not seen. What could it be?

Answer
Gilbert, that is really odd that you lost a bunch of oil and that yet the oil level was still full... It was engine oil and not power sterring fluid right ? Alot of times when you have a leak and oil is every where its hard to find . It could be leaking from the intake gasket, that happens as well . Thanks Adam