Looking for opinions. I have a 2011 Ford Fusion I use to make weekly long highway runs (500 mi roundtrips). My last run I went the by the OLM and changed at 22% remaining and about 7000 miles. By far the longest I've ever gone on an conventional. Is PYB 5-20 good for that? Car has 100K and runs perfect. The car had a steady diet of Motorcraft syn blend before I got it and is in perfect condition. I might send in for an UOA, but for the $25 it costs I'll just change the oil, so I'm looking for gut reactions. Car has very little city and no traffic/stop and go driving. Just 80mph interstate.