Yup. Originally I posted in this thread about my 2005 OBX. My 2011 Legacy is gurgling and knocking now. The knocking isn't all the time though. Just once in a while. Combine this with the oil consumption issue, the wheel bearing issue, the alternator issue, the PCV valve issue...in the 2015 OBX, and think we may solve all issues by transitioning from an all Subaru household to an all Toyota household. I hate to do that.