I recently suffered a very large oil leak on my 2004 Passat GLX with the 2.8 30V. It was 3 degrees outside when i started it up and headed 30 miles to school. It started just fine and i did not notice any problems the entire trip until i was about 2 miles from school. When i came to a stop i had a strong odor of oil and an actual haze coming through the vents. When i got to school and pulled it into the shop (i'm going for Automotive Technician) i pulled the belly pan off to find that oil was literally everywhere under the car. After trying to find where the oil leak was coming from i only found that it was not around the valve gaskets at all so that is a plus but there was so much oil everywhere else i could not identify where the leak originated. some of my instructors believe it to be the oil pressure control valve got stuck from the cold and it blew oil every where from the gasket of the oil filter. I cleaned off anywhere that had oil on it, put 1.5 quarts back into it and took it for a road test to come back and find no oil leaks however my transmission then started to have a very abrupt action at 35MPH under accelerating and Decelerating. Any ideas as to what might be the problem?