Just wanted to get some quick feedback from folks on this. I've had M1 15W-50 in my car for the past 13+ mos/6500 miles, but I've added about a qt of Saab 5W-30 A3 semi-syn (VOA posted) as makeup. I'm going to swap filters & add Auto-Rx this weekend, so now's the time to take a sample if there's any interest in seeing a UOA. I don't really care too much one way or the other, so I'll consider whether or not folks here have any interest in seeing it. Thanks.