Just a shout out to anyone running Formula Shell conventional oil I just wanted to say its good stuff! I just finished an oil change on moms Buick 3.8 V6 with 313,000 miles I started running it on Formula Shell 5w30 from 5,000 miles with either an AC Delco filter or a Fram ext guard changed every 5-6K I did a UOA test about a year ago and all looked great. I am not saying that any other quality oil would not have worked just as well I am just saying that for a reasonable priced conventional oil it does a fine job and I would have no reservation about running it in just about anything on the road.