Own the Nox' since new, done every oil change every 3k. Changed the oil on saturday, got underneath to drain the oil and saw oily residue on the bottom completely away from drain plug. I figured its probably when you pull the oil filter out and some oil escapes and drips down. Drained it into oil catch pan...no biggie right??? re-installed the plug filled it with 5 quarts of Pennzoil 5w-30. I proceed to the garage with drain pan. got my 2 1 gallon milk jugs ready put in funnel and drain oil into milk jug. Guess what?? It only filled 1 jug HALFWAY. I mean really 2-1/2 to 3 quarts of oil gone??? I have never had this problem before. I have an appointment at my dealer on friday where i have to explain further to what the problem is.