I just purchased a jug M1 EP 5w30 for the wife's 13 equinox 2.4 to get it off of the AC Delco syn blend the dealer uses. I was going to change today but the olm stopped me with only 59%. She has went by the oil monitor and dealers recommended change at 20% oil life remaining which has went farther due to scheduling issues. Im contiplating on waiting to draw a sample to send to Blackstone when it hits 20% to see what 7500ish miles on the ACDelco syn blend looks like. The car has 66,148 miles on it and I have a feeling we have been pushing the oil way past its limits for the 6 years we have owned it. This was a hard decision to pick an oil as i wanted a sturdy cleaning aditive so i was leaning towards PPPP for that, but want to throw up a shield for wear and the latest thread on hths made me lean more towards M1EP. Napa Gold cartridge filters are on hand and ready to go. but what would you do? Some extensive warm up periods in the winter, mostly city with almost no highway, and she drives like F1 driver. What do you guys think?