I changed my oil today, and when I poured the oil from the drain pan into a bucket it surely didn't seem to be 5.5 quarts as it should be, it seemed more like around 3 to my best guess. I just checked the oil about a week and a half ago and it was fine. Since it seemed to be low, I checked the second PCV valve that I put inline, the generic metal one from Advanced Auto. When I pulled it out, the top of it (end towards intake manifold) had about 3 drops worth of oil on it and the tubing above it actually dripped oil out of it. The bottom was brown, kinda a rust looking brown, and it was a gritty and brown fluid, very thick. I cleaned it up and blew out the valve with an air compressor and put it back in. It was still functioning, it moved up and down as it did when it was new. I'm sure I had the valve in the right way, with the threads towards the bottom. What's going on?????