Noticed that my rear cylinder muffler on the new 2011 Ultra Limited was getting a light brown ring around it after a few hundred miles but did not notice any oil usage. Just prior to the 1000 mile check up I noticed the top of the transmission was wet with oil, checked an the crankcase was about a 1/2 qt low. Road home and rechecked the oil, down a full qt; called the dealer and was told they would check it when they did the 1k service. After an hour the service manager called and said the technician figures the issue was a porous head. Repalced the head and so far (only about 200 miles) no issues; the weather and work may finally cooperate this weekend so I can put on some miles and get a thorough test. Keeping my fingers crossed. Anyone ever hear about this type of situation? Search of the site resulted in a porous casing result but nothing regarding a porous head.